121727570776 has 32 divisors (see below), whose sum is σ = 260920404000. Its totient is φ = 52153837056.

The previous prime is 121727570689. The next prime is 121727570813. The reversal of 121727570776 is 677075727121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119041 + ... + 507568.

It is an arithmetic number, because the mean of its divisors is an integer number (8153762625).

Almost surely, 2^121727570776 is an apocalyptic number.

It is an amenable number.

121727570776 is an abundant number, since it is smaller than the sum of its proper divisors (139192833224).

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

121727570776 is a wasteful number, since it uses less digits than its factorization.

121727570776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630091 (or 630087 counting only the distinct ones).

The product of its (nonzero) digits is 2016840, while the sum is 52.

The spelling of 121727570776 in words is "one hundred twenty-one billion, seven hundred twenty-seven million, five hundred seventy thousand, seven hundred seventy-six".