Search a number
-
+
5181951283200 = 21231052857
BaseRepresentation
bin100101101101000010001…
…0111011001000000000000
3200100101112002120000000000
41023122010113121000000
51134400114012030300
615004320000000000
71043245404102426
oct113320427310000
920311462500000
105181951283200
11171872045168a
126b8369000000
132b786b056853
1413cb44799116
158ebdb3b7c00
hex4b6845d9000

5181951283200 has 858 divisors, whose sum is σ = 19296887380914. Its totient is φ = 1380241244160.

The previous prime is 5181951283181. The next prime is 5181951283219. The reversal of 5181951283200 is 23821591815.

5181951283200 is a `hidden beast` number, since 5 + 1 + 81 + 95 + 1 + 283 + 200 = 666.

It is an interprime number because it is at equal distance from previous prime (5181951283181) and next prime (5181951283219).

It can be written as a sum of positive squares in 3 ways, for example, as 1219239972864 + 3962711310336 = 1104192^2 + 1990656^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 65 ways as a sum of consecutive naturals, for example, 6046617172 + ... + 6046618028.

It is an arithmetic number, because the mean of its divisors is an integer number (22490544733).

Almost surely, 25181951283200 is an apocalyptic number.

5181951283200 is a gapful number since it is divisible by the number (50) 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 5181951283200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9648443690457).

5181951283200 is an abundant number, since it is smaller than the sum of its proper divisors (14114936097714).

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

5181951283200 is an frugal number, since it uses more digits than its factorization.

5181951283200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921 (or 867 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 45.

The spelling of 5181951283200 in words is "five trillion, one hundred eighty-one billion, nine hundred fifty-one million, two hundred eighty-three thousand, two hundred".