121752335656 has 24 divisors (see below), whose sum is σ = 265556753370. Its totient is φ = 52179572256.

The previous prime is 121752335647. The next prime is 121752335701. The reversal of 121752335656 is 656533257121.

It can be written as a sum of positive squares in only one way, i.e., 93617640900 + 28134694756 = 305970^2 + 167734^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 155295955 + ... + 155296738.

Almost surely, 2^121752335656 is an apocalyptic number.

It is an amenable number.

121752335656 is an abundant number, since it is smaller than the sum of its proper divisors (143804417714).

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

121752335656 is a wasteful number, since it uses less digits than its factorization.

121752335656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310592713 (or 310592702 counting only the distinct ones).

The product of its digits is 1134000, while the sum is 46.

The spelling of 121752335656 in words is "one hundred twenty-one billion, seven hundred fifty-two million, three hundred thirty-five thousand, six hundred fifty-six".