422640213808 has 20 divisors (see below), whose sum is σ = 818885003680. Its totient is φ = 211315051584.

The previous prime is 422640213791. The next prime is 422640213851. The reversal of 422640213808 is 808312046224.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 426658 + ... + 1013566.

It is an arithmetic number, because the mean of its divisors is an integer number (40944250184).

Almost surely, 2^422640213808 is an apocalyptic number.

It is an amenable number.

422640213808 is a deficient number, since it is larger than the sum of its proper divisors (396244789872).

422640213808 is a wasteful number, since it uses less digits than its factorization.

422640213808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631924 (or 631918 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 40.

The spelling of 422640213808 in words is "four hundred twenty-two billion, six hundred forty million, two hundred thirteen thousand, eight hundred eight".