156442685668 has 12 divisors (see below), whose sum is σ = 277630682112. Its totient is φ = 77119633640.

The previous prime is 156442685629. The next prime is 156442685669. The reversal of 156442685668 is 866586244651.

156442685668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (156442685669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275426980 + ... + 275427547.

It is an arithmetic number, because the mean of its divisors is an integer number (23135890176).

Almost surely, 2^156442685668 is an apocalyptic number.

It is an amenable number.

156442685668 is a deficient number, since it is larger than the sum of its proper divisors (121187996444).

156442685668 is a wasteful number, since it uses less digits than its factorization.

156442685668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550854602 (or 550854600 counting only the distinct ones).

The product of its digits is 66355200, while the sum is 61.

It can be divided in two parts, 15644268 and 5668, that added together give a square (15649936 = 3956²).

The spelling of 156442685668 in words is "one hundred fifty-six billion, four hundred forty-two million, six hundred eighty-five thousand, six hundred sixty-eight".