Search a number
-
+
15168571249104 = 24337131973278191
BaseRepresentation
bin1101110010111011010101…
…0011010001000111010000
31222201002201210220002121000
43130232311103101013100
53442010213214432404
652132202340302000
73123615223155210
oct334566523210720
958632653802530
1015168571249104
114918a56031a89
12184b92b9a1900
1386050c16c820
143a623c8b4240
151b488183b339
hexdcbb54d11d0

15168571249104 has 640 divisors, whose sum is σ = 57180251340800. Its totient is φ = 3738019000320.

The previous prime is 15168571249103. The next prime is 15168571249127. The reversal of 15168571249104 is 40194217586151.

It is a happy number.

15168571249104 is a `hidden beast` number, since 1 + 5 + 1 + 6 + 85 + 71 + 2 + 491 + 0 + 4 = 666.

15168571249104 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15168571249103) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 54386649 + ... + 54664839.

It is an arithmetic number, because the mean of its divisors is an integer number (89344142720).

Almost surely, 215168571249104 is an apocalyptic number.

15168571249104 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15168571249104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28590125670400).

15168571249104 is an abundant number, since it is smaller than the sum of its proper divisors (42011680091696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15168571249104 is a wasteful number, since it uses less digits than its factorization.

15168571249104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278320 (or 278308 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 54.

The spelling of 15168571249104 in words is "fifteen trillion, one hundred sixty-eight billion, five hundred seventy-one million, two hundred forty-nine thousand, one hundred four".