156345904836 has 135 divisors (see below), whose sum is σ = 449478278557. Its totient is φ = 47353822560.

The previous prime is 156345904831. The next prime is 156345904843. The reversal of 156345904836 is 638409543651.

The square root of 156345904836 is 395406.

It is a perfect power (a square), and thus also a powerful number.

156345904836 is a `hidden beast` number, since 1 + 5 + 6 + 3 + 4 + 590 + 48 + 3 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3890016900 + 152455887936 = 62370^2 + 390456^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (156345904831) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 78289390 + ... + 78291386.

Almost surely, 2^156345904836 is an apocalyptic number.

156345904836 is the 395406-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 156345904836

156345904836 is an abundant number, since it is smaller than the sum of its proper divisors (293132373721).

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

156345904836 is an equidigital number, since it uses as much as digits as its factorization.

156345904836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4032 (or 2013 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 54.

The spelling of 156345904836 in words is "one hundred fifty-six billion, three hundred forty-five million, nine hundred four thousand, eight hundred thirty-six".