21334591692 has 18 divisors (see below), whose sum is σ = 53929106868. Its totient is φ = 7111530552.

The previous prime is 21334591687. The next prime is 21334591709. The reversal of 21334591692 is 29619543312.

21334591692 is a `hidden beast` number, since 2 + 1 + 33 + 459 + 169 + 2 = 666.

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

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, 296313738 + ... + 296313809.

Almost surely, 2^21334591692 is an apocalyptic number.

It is an amenable number.

21334591692 is an abundant number, since it is smaller than the sum of its proper divisors (32594515176).

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

21334591692 is a wasteful number, since it uses less digits than its factorization.

21334591692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592627557 (or 592627552 counting only the distinct ones).

The product of its digits is 349920, while the sum is 45.

The spelling of 21334591692 in words is "twenty-one billion, three hundred thirty-four million, five hundred ninety-one thousand, six hundred ninety-two".