121879913946 has 32 divisors (see below), whose sum is σ = 280139005440. Its totient is φ = 34628289456.

The previous prime is 121879913873. The next prime is 121879913963. The reversal of 121879913946 is 649319978121.

121879913946 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 121879913946.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8098356 + ... + 8113391.

It is an arithmetic number, because the mean of its divisors is an integer number (8754343920).

Almost surely, 2^121879913946 is an apocalyptic number.

121879913946 is an abundant number, since it is smaller than the sum of its proper divisors (158259091494).

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

121879913946 is a wasteful number, since it uses less digits than its factorization.

121879913946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16211938.

The product of its digits is 5878656, while the sum is 60.

The spelling of 121879913946 in words is "one hundred twenty-one billion, eight hundred seventy-nine million, nine hundred thirteen thousand, nine hundred forty-six".