121660354266564 has 48 divisors (see below), whose sum is σ = 289358769268800. Its totient is φ = 39770615664000.

The previous prime is 121660354266559. The next prime is 121660354266611. The reversal of 121660354266564 is 465662453066121.

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, 41058339 + ... + 43921610.

It is an arithmetic number, because the mean of its divisors is an integer number (6028307693100).

Almost surely, 2^{121660354266564} is an apocalyptic number.

It is an amenable number.

121660354266564 is an abundant number, since it is smaller than the sum of its proper divisors (167698415002236).

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

121660354266564 is a wasteful number, since it uses less digits than its factorization.

121660354266564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84982260 (or 84982258 counting only the distinct ones).

The product of its (nonzero) digits is 37324800, while the sum is 57.

The spelling of 121660354266564 in words is "one hundred twenty-one trillion, six hundred sixty billion, three hundred fifty-four million, two hundred sixty-six thousand, five hundred sixty-four".