121577602672 has 20 divisors (see below), whose sum is σ = 235597128160. Its totient is φ = 60778343808.

The previous prime is 121577602651. The next prime is 121577602691. The reversal of 121577602672 is 276206775121.

It is a super-2 number, since 2×121577602672² (a number of 23 digits) contains 22 as substring.

It is a congruent 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, 557253 + ... + 744100.

It is an arithmetic number, because the mean of its divisors is an integer number (11779856408).

Almost surely, 2^121577602672 is an apocalyptic number.

It is an amenable number.

121577602672 is a deficient number, since it is larger than the sum of its proper divisors (114019525488).

121577602672 is a wasteful number, since it uses less digits than its factorization.

121577602672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1307200 (or 1307194 counting only the distinct ones).

The product of its (nonzero) digits is 493920, while the sum is 46.

The spelling of 121577602672 in words is "one hundred twenty-one billion, five hundred seventy-seven million, six hundred two thousand, six hundred seventy-two".