121967946477 has 80 divisors (see below), whose sum is σ = 204174432000. Its totient is φ = 72072643968.

The previous prime is 121967946449. The next prime is 121967946481. The reversal of 121967946477 is 774649769121.

121967946477 is a `hidden beast` number, since 1 + 2 + 1 + 96 + 79 + 4 + 6 + 477 = 666.

It is not a de Polignac number, because 121967946477 - 2⁶ = 121967946413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121967946487) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2599774 + ... + 2646272.

It is an arithmetic number, because the mean of its divisors is an integer number (2552180400).

Almost surely, 2^121967946477 is an apocalyptic number.

It is an amenable number.

121967946477 is a deficient number, since it is larger than the sum of its proper divisors (82206485523).

121967946477 is a wasteful number, since it uses less digits than its factorization.

121967946477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46624 (or 46615 counting only the distinct ones).

The product of its digits is 32006016, while the sum is 63.

The spelling of 121967946477 in words is "one hundred twenty-one billion, nine hundred sixty-seven million, nine hundred forty-six thousand, four hundred seventy-seven".