157172399994 has 16 divisors (see below), whose sum is σ = 314365567680. Its totient is φ = 52387338720.

The previous prime is 157172399983. The next prime is 157172400017. The reversal of 157172399994 is 499993271751.

It is a happy number.

157172399994 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 766059 + ... + 949310.

It is an arithmetic number, because the mean of its divisors is an integer number (19647847980).

Almost surely, 2^157172399994 is an apocalyptic number.

157172399994 is an abundant number, since it is smaller than the sum of its proper divisors (157193167686).

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

157172399994 is a wasteful number, since it uses less digits than its factorization.

157172399994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1730645.

The product of its digits is 38578680, while the sum is 66.

The spelling of 157172399994 in words is "one hundred fifty-seven billion, one hundred seventy-two million, three hundred ninety-nine thousand, nine hundred ninety-four".