461279670021 has 56 divisors (see below), whose sum is σ = 722109459456. Its totient is φ = 293971407840.

The previous prime is 461279670017. The next prime is 461279670073. The reversal of 461279670021 is 120076972164.

461279670021 is a `hidden beast` number, since 4 + 612 + 7 + 9 + 6 + 7 + 0 + 0 + 21 = 666.

It is not a de Polignac number, because 461279670021 - 2² = 461279670017 is a prime.

It is a super-2 number, since 2×461279670021² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (461279677021) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 31195996 + ... + 31210778.

It is an arithmetic number, because the mean of its divisors is an integer number (12894811776).

Almost surely, 2^461279670021 is an apocalyptic number.

It is an amenable number.

461279670021 is a deficient number, since it is larger than the sum of its proper divisors (260829789435).

461279670021 is a wasteful number, since it uses less digits than its factorization.

461279670021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16685 (or 16670 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The spelling of 461279670021 in words is "four hundred sixty-one billion, two hundred seventy-nine million, six hundred seventy thousand, twenty-one".