21574076716 has 12 divisors (see below), whose sum is σ = 37758000280. Its totient is φ = 10786076640.

The previous prime is 21574076707. The next prime is 21574076731. The reversal of 21574076716 is 61767047512.

It is a super-2 number, since 2×21574076716² (a number of 21 digits) contains 22 as substring.

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, 188721 + ... + 280648.

Almost surely, 2^21574076716 is an apocalyptic number.

It is an amenable number.

21574076716 is a deficient number, since it is larger than the sum of its proper divisors (16183923564).

21574076716 is a wasteful number, since it uses less digits than its factorization.

21574076716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480864 (or 480862 counting only the distinct ones).

The product of its (nonzero) digits is 493920, while the sum is 46.

The spelling of 21574076716 in words is "twenty-one billion, five hundred seventy-four million, seventy-six thousand, seven hundred sixteen".