121560358616 has 64 divisors (see below), whose sum is σ = 243526629600. Its totient is φ = 56787913728.

The previous prime is 121560358603. The next prime is 121560358649. The reversal of 121560358616 is 616853065121.

It is a congruent number.

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, 829895 + ... + 965321.

Almost surely, 2^121560358616 is an apocalyptic number.

It is an amenable number.

121560358616 is an abundant number, since it is smaller than the sum of its proper divisors (121966270984).

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

121560358616 is a wasteful number, since it uses less digits than its factorization.

121560358616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135588 (or 135584 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 44.

The spelling of 121560358616 in words is "one hundred twenty-one billion, five hundred sixty million, three hundred fifty-eight thousand, six hundred sixteen".