72157099156926 has 32 divisors (see below), whose sum is σ = 166563487738368. Its totient is φ = 20412192122400.

The previous prime is 72157099156921. The next prime is 72157099156927. The reversal of 72157099156926 is 62965199075127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72157099156921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8505075810 + ... + 8505084293.

It is an arithmetic number, because the mean of its divisors is an integer number (5205108991824).

Almost surely, 2^{72157099156926} is an apocalyptic number.

72157099156926 is an abundant number, since it is smaller than the sum of its proper divisors (94406388581442).

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

72157099156926 is a wasteful number, since it uses less digits than its factorization.

72157099156926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17010160216.

The product of its (nonzero) digits is 128595600, while the sum is 69.

The spelling of 72157099156926 in words is "seventy-two trillion, one hundred fifty-seven billion, ninety-nine million, one hundred fifty-six thousand, nine hundred twenty-six".