422791622465778 has 64 divisors (see below), whose sum is σ = 948855469852800. Its totient is φ = 139532808772800.

The previous prime is 422791622465711. The next prime is 422791622465789. The reversal of 422791622465778 is 877564226197224.

422791622465778 is a `hidden beast` number, since 4 + 2 + 2 + 7 + 9 + 1 + 6 + 2 + 2 + 46 + 577 + 8 = 666.

It is a super-2 number, since 2×422791622465778² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 334697868 + ... + 335958696.

It is an arithmetic number, because the mean of its divisors is an integer number (14825866716450).

Almost surely, 2^{422791622465778} is an apocalyptic number.

422791622465778 is an abundant number, since it is smaller than the sum of its proper divisors (526063847387022).

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

422791622465778 is a wasteful number, since it uses less digits than its factorization.

422791622465778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1322424 (or 1322418 counting only the distinct ones).

The product of its digits is 1137991680, while the sum is 72.

The spelling of 422791622465778 in words is "four hundred twenty-two trillion, seven hundred ninety-one billion, six hundred twenty-two million, four hundred sixty-five thousand, seven hundred seventy-eight".