121376764166157 has 6 divisors (see below), whose sum is σ = 175321992684462. Its totient is φ = 80917842777432.

The previous prime is 121376764166149. The next prime is 121376764166173. The reversal of 121376764166157 is 751661467673121.

121376764166157 is a `hidden beast` number, since 1 + 2 + 1 + 3 + 7 + 6 + 7 + 6 + 4 + 1 + 6 + 615 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 91156302951561 + 30220461214596 = 9547581^2 + 5497314^2 .

It is not a de Polignac number, because 121376764166157 - 2³ = 121376764166149 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121376764166094 and 121376764166103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121376764166557) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6743153564778 + ... + 6743153564795.

It is an arithmetic number, because the mean of its divisors is an integer number (29220332114077).

Almost surely, 2^{121376764166157} is an apocalyptic number.

It is an amenable number.

121376764166157 is a deficient number, since it is larger than the sum of its proper divisors (53945228518305).

121376764166157 is a wasteful number, since it uses less digits than its factorization.

121376764166157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13486307129579 (or 13486307129576 counting only the distinct ones).

The product of its digits is 53343360, while the sum is 63.

The spelling of 121376764166157 in words is "one hundred twenty-one trillion, three hundred seventy-six billion, seven hundred sixty-four million, one hundred sixty-six thousand, one hundred fifty-seven".