121677583377 has 16 divisors (see below), whose sum is σ = 185419847552. Its totient is φ = 69527652480.

The previous prime is 121677583361. The next prime is 121677583387. The reversal of 121677583377 is 773385776121.

It is not a de Polignac number, because 121677583377 - 2⁴ = 121677583361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121677583387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 658227 + ... + 822567.

It is an arithmetic number, because the mean of its divisors is an integer number (11588740472).

Almost surely, 2^121677583377 is an apocalyptic number.

It is an amenable number.

121677583377 is a deficient number, since it is larger than the sum of its proper divisors (63742264175).

121677583377 is a wasteful number, since it uses less digits than its factorization.

121677583377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199608.

The product of its digits is 10372320, while the sum is 57.

The spelling of 121677583377 in words is "one hundred twenty-one billion, six hundred seventy-seven million, five hundred eighty-three thousand, three hundred seventy-seven".