22645660400 has 60 divisors (see below), whose sum is σ = 59352228744. Its totient is φ = 8234784000.

The previous prime is 22645660399. The next prime is 22645660409. The reversal of 22645660400 is 406654622.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22645660409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2568971 + ... + 2577770.

Almost surely, 2^22645660400 is an apocalyptic number.

22645660400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22645660400 is an abundant number, since it is smaller than the sum of its proper divisors (36706568344).

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

22645660400 is a wasteful number, since it uses less digits than its factorization.

22645660400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5146770 (or 5146759 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 35.

The spelling of 22645660400 in words is "twenty-two billion, six hundred forty-five million, six hundred sixty thousand, four hundred".