21314814716 has 36 divisors (see below), whose sum is σ = 40454584632. Its totient is φ = 9822106944.

The previous prime is 21314814691. The next prime is 21314814743. The reversal of 21314814716 is 61741841312.

It is a self number, because there is not a number n which added to its sum of digits gives 21314814716.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 410150 + ... + 459186.

It is an arithmetic number, because the mean of its divisors is an integer number (1123738462).

Almost surely, 2^21314814716 is an apocalyptic number.

21314814716 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

21314814716 is a deficient number, since it is larger than the sum of its proper divisors (19139769916).

21314814716 is a wasteful number, since it uses less digits than its factorization.

21314814716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49710 (or 49695 counting only the distinct ones).

The product of its digits is 32256, while the sum is 38.

The spelling of 21314814716 in words is "twenty-one billion, three hundred fourteen million, eight hundred fourteen thousand, seven hundred sixteen".