157855211906 has 32 divisors (see below), whose sum is σ = 271689707520. Its totient is φ = 67382367696.

The previous prime is 157855211873. The next prime is 157855211911. The reversal of 157855211906 is 609112558751.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6172061 + ... + 6197583.

It is an arithmetic number, because the mean of its divisors is an integer number (8490303360).

Almost surely, 2^157855211906 is an apocalyptic number.

157855211906 is a deficient number, since it is larger than the sum of its proper divisors (113834495614).

157855211906 is a wasteful number, since it uses less digits than its factorization.

157855211906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27278.

The product of its (nonzero) digits is 756000, while the sum is 50.

The spelling of 157855211906 in words is "one hundred fifty-seven billion, eight hundred fifty-five million, two hundred eleven thousand, nine hundred six".