121761254776 has 16 divisors (see below), whose sum is σ = 260916974640. Its totient is φ = 52183394880.

The previous prime is 121761254687. The next prime is 121761254807. The reversal of 121761254776 is 677452167121.

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, 1087154005 + ... + 1087154116.

It is an arithmetic number, because the mean of its divisors is an integer number (16307310915).

Almost surely, 2^121761254776 is an apocalyptic number.

It is an amenable number.

121761254776 is an abundant number, since it is smaller than the sum of its proper divisors (139155719864).

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

121761254776 is a wasteful number, since it uses less digits than its factorization.

121761254776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2174308134 (or 2174308130 counting only the distinct ones).

The product of its digits is 987840, while the sum is 49.

The spelling of 121761254776 in words is "one hundred twenty-one billion, seven hundred sixty-one million, two hundred fifty-four thousand, seven hundred seventy-six".