156810608640 has 760 divisors, whose sum is σ = 645552485952. Its totient is φ = 35672555520.

The previous prime is 156810608623. The next prime is 156810608677. The reversal of 156810608640 is 46806018651.

156810608640 is a `hidden beast` number, since 1 + 568 + 1 + 0 + 6 + 0 + 86 + 4 + 0 = 666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 743178135 + ... + 743178345.

Almost surely, 2^156810608640 is an apocalyptic number.

156810608640 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 156810608640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (322776242976).

156810608640 is an abundant number, since it is smaller than the sum of its proper divisors (488741877312).

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

156810608640 is an frugal number, since it uses more digits than its factorization.

156810608640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271 (or 228 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The spelling of 156810608640 in words is "one hundred fifty-six billion, eight hundred ten million, six hundred eight thousand, six hundred forty".