21633671152 has 10 divisors (see below), whose sum is σ = 41915237888. Its totient is φ = 10816835568.

The previous prime is 21633671099. The next prime is 21633671153. The reversal of 21633671152 is 25117633612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21633671153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 676052208 + ... + 676052239.

Almost surely, 2^21633671152 is an apocalyptic number.

It is an amenable number.

21633671152 is a deficient number, since it is larger than the sum of its proper divisors (20281566736).

21633671152 is a wasteful number, since it uses less digits than its factorization.

21633671152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1352104455 (or 1352104449 counting only the distinct ones).

The product of its digits is 45360, while the sum is 37.

The spelling of 21633671152 in words is "twenty-one billion, six hundred thirty-three million, six hundred seventy-one thousand, one hundred fifty-two".