121974834456 has 48 divisors (see below), whose sum is σ = 344711493360. Its totient is φ = 38890526400.

The previous prime is 121974834427. The next prime is 121974834467. The reversal of 121974834456 is 654438479121.

121974834456 is a `hidden beast` number, since 1 + 2 + 197 + 4 + 8 + 3 + 445 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36826495 + ... + 36829806.

It is an arithmetic number, because the mean of its divisors is an integer number (7181489445).

Almost surely, 2^121974834456 is an apocalyptic number.

It is an amenable number.

121974834456 is an abundant number, since it is smaller than the sum of its proper divisors (222736658904).

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

121974834456 is a wasteful number, since it uses less digits than its factorization.

121974834456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73656336 (or 73656329 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The spelling of 121974834456 in words is "one hundred twenty-one billion, nine hundred seventy-four million, eight hundred thirty-four thousand, four hundred fifty-six".