21743908696 has 16 divisors (see below), whose sum is σ = 41871716640. Its totient is φ = 10578117600.

The previous prime is 21743908673. The next prime is 21743908763. The reversal of 21743908696 is 69680934712.

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, 36729280 + ... + 36729871.

It is an arithmetic number, because the mean of its divisors is an integer number (2616982290).

Almost surely, 2^21743908696 is an apocalyptic number.

It is an amenable number.

21743908696 is a deficient number, since it is larger than the sum of its proper divisors (20127807944).

21743908696 is a wasteful number, since it uses less digits than its factorization.

21743908696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73459194 (or 73459190 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 55.

The spelling of 21743908696 in words is "twenty-one billion, seven hundred forty-three million, nine hundred eight thousand, six hundred ninety-six".