122397971844 has 24 divisors (see below), whose sum is σ = 285640091968. Its totient is φ = 40792920480.

The previous prime is 122397971833. The next prime is 122397971933. The reversal of 122397971844 is 448179793221.

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, 720472 + ... + 873999.

Almost surely, 2^122397971844 is an apocalyptic number.

It is an amenable number.

122397971844 is an abundant number, since it is smaller than the sum of its proper divisors (163242120124).

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

122397971844 is a wasteful number, since it uses less digits than its factorization.

122397971844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1600875 (or 1600873 counting only the distinct ones).

The product of its digits is 6096384, while the sum is 57.

The spelling of 122397971844 in words is "one hundred twenty-two billion, three hundred ninety-seven million, nine hundred seventy-one thousand, eight hundred forty-four".