122640716272 has 40 divisors (see below), whose sum is σ = 245047351680. Its totient is φ = 59431968960.

The previous prime is 122640716267. The next prime is 122640716327. The reversal of 122640716272 is 272617046221.

It is a congruent number.

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, 847878 + ... + 981925.

It is an arithmetic number, because the mean of its divisors is an integer number (6126183792).

Almost surely, 2^122640716272 is an apocalyptic number.

It is an amenable number.

122640716272 is a deficient number, since it is larger than the sum of its proper divisors (122406635408).

122640716272 is a wasteful number, since it uses less digits than its factorization.

122640716272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1829941 (or 1829935 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 40.

The spelling of 122640716272 in words is "one hundred twenty-two billion, six hundred forty million, seven hundred sixteen thousand, two hundred seventy-two".