422973656520 has 64 divisors (see below), whose sum is σ = 1282002664320. Its totient is φ = 111630157824.

The previous prime is 422973656507. The next prime is 422973656551. The reversal of 422973656520 is 25656379224.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18157332 + ... + 18180611.

It is an arithmetic number, because the mean of its divisors is an integer number (20031291630).

Almost surely, 2^422973656520 is an apocalyptic number.

422973656520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

422973656520 is an abundant number, since it is smaller than the sum of its proper divisors (859029007800).

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

422973656520 is a wasteful number, since it uses less digits than its factorization.

422973656520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36338054 (or 36338050 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 51.

The spelling of 422973656520 in words is "four hundred twenty-two billion, nine hundred seventy-three million, six hundred fifty-six thousand, five hundred twenty".