21352687132 has 12 divisors (see below), whose sum is σ = 42705374320. Its totient is φ = 9151151616.

The previous prime is 21352687121. The next prime is 21352687159. The reversal of 21352687132 is 23178625312.

21352687132 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 381297957 + ... + 381298012.

Almost surely, 2^21352687132 is an apocalyptic number.

It is an amenable number.

21352687132 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21352687132 is a wasteful number, since it uses less digits than its factorization.

21352687132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762595980 (or 762595978 counting only the distinct ones).

The product of its digits is 120960, while the sum is 40.

The spelling of 21352687132 in words is "twenty-one billion, three hundred fifty-two million, six hundred eighty-seven thousand, one hundred thirty-two".