461678922891 has 24 divisors (see below), whose sum is σ = 682510576176. Its totient is φ = 300569794560.

The previous prime is 461678922857. The next prime is 461678922893. The reversal of 461678922891 is 198229876164.

461678922891 is a `hidden beast` number, since 4 + 616 + 7 + 8 + 9 + 2 + 2 + 8 + 9 + 1 = 666.

It is not a de Polignac number, because 461678922891 - 2³⁰ = 460605181067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (461678922893) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1927531 + ... + 2153771.

It is an arithmetic number, because the mean of its divisors is an integer number (28437940674).

Almost surely, 2^461678922891 is an apocalyptic number.

461678922891 is a deficient number, since it is larger than the sum of its proper divisors (220831653285).

461678922891 is a wasteful number, since it uses less digits than its factorization.

461678922891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231563 (or 231560 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 63.

The spelling of 461678922891 in words is "four hundred sixty-one billion, six hundred seventy-eight million, nine hundred twenty-two thousand, eight hundred ninety-one".