21532623512 has 8 divisors (see below), whose sum is σ = 40373669100. Its totient is φ = 10766311752.

The previous prime is 21532623503. The next prime is 21532623533.

21532623512 is nontrivially palindromic in base 10.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1345788962 + ... + 1345788977.

Almost surely, 2^21532623512 is an apocalyptic number.

It is an amenable number.

21532623512 is a deficient number, since it is larger than the sum of its proper divisors (18841045588).

21532623512 is a wasteful number, since it uses less digits than its factorization.

21532623512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2691577945 (or 2691577941 counting only the distinct ones).

The product of its digits is 21600, while the sum is 32.

The spelling of 21532623512 in words is "twenty-one billion, five hundred thirty-two million, six hundred twenty-three thousand, five hundred twelve".