121677147690368 has 64 divisors (see below), whose sum is σ = 256664928517200. Its totient is φ = 57259344494592.

The previous prime is 121677147690367. The next prime is 121677147690401. The reversal of 121677147690368 is 863096741776121.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (68).

It is a junction number, because it is equal to n+sod(n) for n = 121677147690298 and 121677147690307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121677147690367) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 442955048 + ... + 443229656.

Almost surely, 2^{121677147690368} is an apocalyptic number.

It is an amenable number.

121677147690368 is an abundant number, since it is smaller than the sum of its proper divisors (134987780826832).

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

121677147690368 is a wasteful number, since it uses less digits than its factorization.

121677147690368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478267 (or 478255 counting only the distinct ones).

The product of its (nonzero) digits is 128024064, while the sum is 68.

The spelling of 121677147690368 in words is "one hundred twenty-one trillion, six hundred seventy-seven billion, one hundred forty-seven million, six hundred ninety thousand, three hundred sixty-eight".