156604343940 has 72 divisors (see below), whose sum is σ = 518218017408. Its totient is φ = 37964688960.

The previous prime is 156604343923. The next prime is 156604343953. The reversal of 156604343940 is 49343406651.

156604343940 is a `hidden beast` number, since 1 + 5 + 6 + 604 + 3 + 4 + 39 + 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 polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39544572 + ... + 39548531.

It is an arithmetic number, because the mean of its divisors is an integer number (7197472464).

Almost surely, 2^156604343940 is an apocalyptic number.

156604343940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

156604343940 is an abundant number, since it is smaller than the sum of its proper divisors (361613673468).

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

156604343940 is a wasteful number, since it uses less digits than its factorization.

156604343940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79093129 (or 79093124 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 45.

The spelling of 156604343940 in words is "one hundred fifty-six billion, six hundred four million, three hundred forty-three thousand, nine hundred forty".