22133609856 has 64 divisors (see below), whose sum is σ = 65324900400. Its totient is φ = 7377868800.

The previous prime is 22133609831. The next prime is 22133609857. The reversal of 22133609856 is 65890633122.

22133609856 is a `hidden beast` number, since 2 + 2 + 1 + 33 + 609 + 8 + 5 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22133609857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3198745 + ... + 3205656.

Almost surely, 2^22133609856 is an apocalyptic number.

It is an amenable number.

22133609856 is an abundant number, since it is smaller than the sum of its proper divisors (43191290544).

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

22133609856 is an equidigital number, since it uses as much as digits as its factorization.

22133609856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6404424 (or 6404406 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 22133609856 in words is "twenty-two billion, one hundred thirty-three million, six hundred nine thousand, eight hundred fifty-six".