121154926464 has 864 divisors, whose sum is σ = 429237736200. Its totient is φ = 32736337920.

The previous prime is 121154926457. The next prime is 121154926489. The reversal of 121154926464 is 464629451121.

121154926464 is a `hidden beast` number, since 1 + 2 + 115 + 492 + 6 + 46 + 4 = 666.

121154926464 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 871618107 + ... + 871618245.

Almost surely, 2^121154926464 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 121154926464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (214618868100).

121154926464 is an abundant number, since it is smaller than the sum of its proper divisors (308082809736).

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

121154926464 is a wasteful number, since it uses less digits than its factorization.

121154926464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244 (or 205 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The spelling of 121154926464 in words is "one hundred twenty-one billion, one hundred fifty-four million, nine hundred twenty-six thousand, four hundred sixty-four".