72119979522 has 12 divisors (see below), whose sum is σ = 156259955670. Its totient is φ = 24039993168.

The previous prime is 72119979521. The next prime is 72119979541. The reversal of 72119979522 is 22597991127.

72119979522 is a `hidden beast` number, since 7 + 21 + 1 + 9 + 97 + 9 + 522 = 666.

It can be written as a sum of positive squares in only one way, i.e., 69612073281 + 2507906241 = 263841^2 + 50079^2 .

It is not an unprimeable number, because it can be changed into a prime (72119979521) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2003332747 + ... + 2003332782.

Almost surely, 2^72119979522 is an apocalyptic number.

72119979522 is an abundant number, since it is smaller than the sum of its proper divisors (84139976148).

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

72119979522 is a wasteful number, since it uses less digits than its factorization.

72119979522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4006665537 (or 4006665534 counting only the distinct ones).

The product of its digits is 1428840, while the sum is 54.

The spelling of 72119979522 in words is "seventy-two billion, one hundred nineteen million, nine hundred seventy-nine thousand, five hundred twenty-two".