424640404644 has 24 divisors (see below), whose sum is σ = 1049111588448. Its totient is φ = 133220519040.

The previous prime is 424640404609. The next prime is 424640404663. The reversal of 424640404644 is 446404046424.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 424640404596 and 424640404605.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1040785102 + ... + 1040785509.

It is an arithmetic number, because the mean of its divisors is an integer number (43712982852).

Almost surely, 2^424640404644 is an apocalyptic number.

It is an amenable number.

424640404644 is an abundant number, since it is smaller than the sum of its proper divisors (624471183804).

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

424640404644 is a wasteful number, since it uses less digits than its factorization.

424640404644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2081570635 (or 2081570633 counting only the distinct ones).

The product of its (nonzero) digits is 1179648, while the sum is 42.

The spelling of 424640404644 in words is "four hundred twenty-four billion, six hundred forty million, four hundred four thousand, six hundred forty-four".