21795592668 has 24 divisors (see below), whose sum is σ = 50861773200. Its totient is φ = 7264427520.

The previous prime is 21795592657. The next prime is 21795592703. The reversal of 21795592668 is 86629559712.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28108 + ... + 210668.

It is an arithmetic number, because the mean of its divisors is an integer number (2119240550).

Almost surely, 2^21795592668 is an apocalyptic number.

It is an amenable number.

21795592668 is an abundant number, since it is smaller than the sum of its proper divisors (29066180532).

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

21795592668 is a wasteful number, since it uses less digits than its factorization.

21795592668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192517 (or 192515 counting only the distinct ones).

The product of its digits is 16329600, while the sum is 60.

The spelling of 21795592668 in words is "twenty-one billion, seven hundred ninety-five million, five hundred ninety-two thousand, six hundred sixty-eight".