121655563116060 has 48 divisors (see below), whose sum is σ = 340637141763072. Its totient is φ = 32441334446400.

The previous prime is 121655563116041. The next prime is 121655563116067. The reversal of 121655563116060 is 60611365556121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121655563116067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8833105 + ... + 17925815.

It is an arithmetic number, because the mean of its divisors is an integer number (7096607120064).

Almost surely, 2^{121655563116060} is an apocalyptic number.

121655563116060 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121655563116060 is an abundant number, since it is smaller than the sum of its proper divisors (218981578647012).

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

121655563116060 is a wasteful number, since it uses less digits than its factorization.

121655563116060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9315714 (or 9315712 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 48.

The spelling of 121655563116060 in words is "one hundred twenty-one trillion, six hundred fifty-five billion, five hundred sixty-three million, one hundred sixteen thousand, sixty".