121455456966 has 80 divisors (see below), whose sum is σ = 291658349664. Its totient is φ = 37678265856.

The previous prime is 121455456917. The next prime is 121455456971. The reversal of 121455456966 is 669654554121.

It is a happy number.

121455456966 is a `hidden beast` number, since 1 + 2 + 1 + 4 + 5 + 545 + 6 + 96 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 302635 + ... + 578358.

Almost surely, 2^121455456966 is an apocalyptic number.

121455456966 is an abundant number, since it is smaller than the sum of its proper divisors (170202892698).

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

121455456966 is a wasteful number, since it uses less digits than its factorization.

121455456966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881067 (or 881058 counting only the distinct ones).

The product of its digits is 7776000, while the sum is 54.

The spelling of 121455456966 in words is "one hundred twenty-one billion, four hundred fifty-five million, four hundred fifty-six thousand, nine hundred sixty-six".