122647644379 has 16 divisors (see below), whose sum is σ = 132818616000. Its totient is φ = 112582521216.

The previous prime is 122647644349. The next prime is 122647644407. The reversal of 122647644379 is 973446746221.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122647644379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122647644349) 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, 5092137 + ... + 5116165.

It is an arithmetic number, because the mean of its divisors is an integer number (8301163500).

Almost surely, 2^122647644379 is an apocalyptic number.

122647644379 is a deficient number, since it is larger than the sum of its proper divisors (10170971621).

122647644379 is a wasteful number, since it uses less digits than its factorization.

122647644379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26214.

The product of its digits is 12192768, while the sum is 55.

The spelling of 122647644379 in words is "one hundred twenty-two billion, six hundred forty-seven million, six hundred forty-four thousand, three hundred seventy-nine".