21713643622 has 32 divisors (see below), whose sum is σ = 36484680960. Its totient is φ = 9608293920.

The previous prime is 21713643619. The next prime is 21713643641. The reversal of 21713643622 is 22634631712.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52488 + ... + 214900.

It is an arithmetic number, because the mean of its divisors is an integer number (1140146280).

Almost surely, 2^21713643622 is an apocalyptic number.

21713643622 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21713643622 is a deficient number, since it is larger than the sum of its proper divisors (14771037338).

21713643622 is a wasteful number, since it uses less digits than its factorization.

21713643622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162588.

The product of its digits is 72576, while the sum is 37.

The spelling of 21713643622 in words is "twenty-one billion, seven hundred thirteen million, six hundred forty-three thousand, six hundred twenty-two".