156696993504 has 240 divisors, whose sum is σ = 472500250992. Its totient is φ = 50915837952.

The previous prime is 156696993421. The next prime is 156696993521. The reversal of 156696993504 is 405399696651.

156696993504 is a `hidden beast` number, since 1 + 5 + 6 + 69 + 69 + 9 + 3 + 504 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 72779692 + ... + 72781844.

Almost surely, 2^156696993504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 156696993504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236250125496).

156696993504 is an abundant number, since it is smaller than the sum of its proper divisors (315803257488).

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

156696993504 is a wasteful number, since it uses less digits than its factorization.

156696993504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2871 (or 2854 counting only the distinct ones).

The product of its (nonzero) digits is 47239200, while the sum is 63.

The spelling of 156696993504 in words is "one hundred fifty-six billion, six hundred ninety-six million, nine hundred ninety-three thousand, five hundred four".