156601252800 has 2016 divisors, whose sum is σ = 680993913600. Its totient is φ = 35115171840.

The previous prime is 156601252747. The next prime is 156601252849. The reversal of 156601252800 is 8252106651.

156601252800 is a `hidden beast` number, since 1 + 5 + 6 + 601 + 25 + 28 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 3641889579 + ... + 3641889621.

It is an arithmetic number, because the mean of its divisors is an integer number (337794600).

Almost surely, 2^156601252800 is an apocalyptic number.

156601252800 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 156601252800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (340496956800).

156601252800 is an abundant number, since it is smaller than the sum of its proper divisors (524392660800).

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

156601252800 is a wasteful number, since it uses less digits than its factorization.

156601252800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145 (or 118 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The spelling of 156601252800 in words is "one hundred fifty-six billion, six hundred one million, two hundred fifty-two thousand, eight hundred".