122626513644 has 72 divisors (see below), whose sum is σ = 307365624720. Its totient is φ = 38038708224.

The previous prime is 122626513637. The next prime is 122626513693. The reversal of 122626513644 is 446315626221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 122626513596 and 122626513605.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 110004 + ... + 507300.

It is an arithmetic number, because the mean of its divisors is an integer number (4268967010).

Almost surely, 2^122626513644 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122626513644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153682812360).

122626513644 is an abundant number, since it is smaller than the sum of its proper divisors (184739111076).

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

122626513644 is a wasteful number, since it uses less digits than its factorization.

122626513644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397427 (or 397408 counting only the distinct ones).

The product of its digits is 414720, while the sum is 42.

The spelling of 122626513644 in words is "one hundred twenty-two billion, six hundred twenty-six million, five hundred thirteen thousand, six hundred forty-four".