121954877776 has 20 divisors (see below), whose sum is σ = 236370542944. Its totient is φ = 60956028000.

The previous prime is 121954877767. The next prime is 121954877783. The reversal of 121954877776 is 677778459121.

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, 1291140 + ... + 1382371.

Almost surely, 2^121954877776 is an apocalyptic number.

121954877776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

121954877776 is a deficient number, since it is larger than the sum of its proper divisors (114415665168).

121954877776 is a wasteful number, since it uses less digits than its factorization.

121954877776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2676370 (or 2676364 counting only the distinct ones).

The product of its digits is 41489280, while the sum is 64.

The spelling of 121954877776 in words is "one hundred twenty-one billion, nine hundred fifty-four million, eight hundred seventy-seven thousand, seven hundred seventy-six".