21696134076 has 18 divisors (see below), whose sum is σ = 54843005672. Its totient is φ = 7232044680.

The previous prime is 21696134011. The next prime is 21696134129. The reversal of 21696134076 is 67043169612.

21696134076 is a `hidden beast` number, since 21 + 6 + 9 + 613 + 4 + 0 + 7 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 301335160 + ... + 301335231.

Almost surely, 2^21696134076 is an apocalyptic number.

It is an amenable number.

21696134076 is an abundant number, since it is smaller than the sum of its proper divisors (33146871596).

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

21696134076 is a wasteful number, since it uses less digits than its factorization.

21696134076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602670401 (or 602670396 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The spelling of 21696134076 in words is "twenty-one billion, six hundred ninety-six million, one hundred thirty-four thousand, seventy-six".