121929274077078 has 64 divisors (see below), whose sum is σ = 265083055598592. Its totient is φ = 37164422695680.

The previous prime is 121929274077047. The next prime is 121929274077097. The reversal of 121929274077078 is 870770472929121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 194240250 + ... + 194866962.

It is an arithmetic number, because the mean of its divisors is an integer number (4141922743728).

Almost surely, 2^{121929274077078} is an apocalyptic number.

121929274077078 is an abundant number, since it is smaller than the sum of its proper divisors (143153781521514).

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

121929274077078 is a wasteful number, since it uses less digits than its factorization.

121929274077078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650149.

The product of its (nonzero) digits is 49787136, while the sum is 66.

The spelling of 121929274077078 in words is "one hundred twenty-one trillion, nine hundred twenty-nine billion, two hundred seventy-four million, seventy-seven thousand, seventy-eight".