Search a number
-
+
19294805011680 = 253551161857863
BaseRepresentation
bin1000110001100011010111…
…11111111010110011100000
32112022120021010200100200000
410120301223333322303200
510012111230040333210
6105011524442100000
74031001153355542
oct430615377726340
975276233610600
1019294805011680
116169976461870
1221b75671aa600
13a9c652797113
144a9c33019692
15236d7ebacac0
hex118c6bfface0

19294805011680 has 1152 divisors, whose sum is σ = 75886958923776. Its totient is φ = 4590154137600.

The previous prime is 19294805011667. The next prime is 19294805011739. The reversal of 19294805011680 is 8611050849291.

19294805011680 is a `hidden beast` number, since 1 + 9 + 2 + 9 + 48 + 0 + 501 + 16 + 80 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 22357826929 + ... + 22357827791.

It is an arithmetic number, because the mean of its divisors is an integer number (65874096288).

Almost surely, 219294805011680 is an apocalyptic number.

19294805011680 is a gapful number since it is divisible by the number (10) 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 19294805011680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37943479461888).

19294805011680 is an abundant number, since it is smaller than the sum of its proper divisors (56592153912096).

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

19294805011680 is a wasteful number, since it uses less digits than its factorization.

19294805011680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1822 (or 1802 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 54.

The spelling of 19294805011680 in words is "nineteen trillion, two hundred ninety-four billion, eight hundred five million, eleven thousand, six hundred eighty".