21633433612 has 48 divisors (see below), whose sum is σ = 44096754240. Its totient is φ = 9095328000.

The previous prime is 21633433579. The next prime is 21633433621.

21633433612 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×21633433612² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 273162 + ... + 343342.

It is an arithmetic number, because the mean of its divisors is an integer number (918682380).

Almost surely, 2^21633433612 is an apocalyptic number.

It is an amenable number.

21633433612 is an abundant number, since it is smaller than the sum of its proper divisors (22463320628).

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

21633433612 is a wasteful number, since it uses less digits than its factorization.

21633433612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70402 (or 70400 counting only the distinct ones).

The product of its digits is 46656, while the sum is 34.

The spelling of 21633433612 in words is "twenty-one billion, six hundred thirty-three million, four hundred thirty-three thousand, six hundred twelve".