22532470640 has 20 divisors (see below), whose sum is σ = 52387994424. Its totient is φ = 9012988224.

The previous prime is 22532470637. The next prime is 22532470679. The reversal of 22532470640 is 4607423522.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 22532470640.

It is a congruent number.

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, 140827862 + ... + 140828021.

Almost surely, 2^22532470640 is an apocalyptic number.

22532470640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22532470640 is an abundant number, since it is smaller than the sum of its proper divisors (29855523784).

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

22532470640 is a wasteful number, since it uses less digits than its factorization.

22532470640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281655896 (or 281655890 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 35.

The spelling of 22532470640 in words is "twenty-two billion, five hundred thirty-two million, four hundred seventy thousand, six hundred forty".