121740488864 has 24 divisors (see below), whose sum is σ = 247408092288. Its totient is φ = 58906687680.

The previous prime is 121740488843. The next prime is 121740488911. The reversal of 121740488864 is 468884047121.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61360142 + ... + 61362125.

It is an arithmetic number, because the mean of its divisors is an integer number (10308670512).

Almost surely, 2^121740488864 is an apocalyptic number.

It is an amenable number.

121740488864 is an abundant number, since it is smaller than the sum of its proper divisors (125667603424).

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

121740488864 is a wasteful number, since it uses less digits than its factorization.

121740488864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122722308 (or 122722300 counting only the distinct ones).

The product of its (nonzero) digits is 2752512, while the sum is 53.

The spelling of 121740488864 in words is "one hundred twenty-one billion, seven hundred forty million, four hundred eighty-eight thousand, eight hundred sixty-four".