21760379716 has 24 divisors (see below), whose sum is σ = 38528652960. Its totient is φ = 10752749952.

The previous prime is 21760379701. The next prime is 21760379731. The reversal of 21760379716 is 61797306712.

It is an interprime number because it is at equal distance from previous prime (21760379701) and next prime (21760379731).

It is a self number, because there is not a number n which added to its sum of digits gives 21760379716.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87475 + ... + 226213.

It is an arithmetic number, because the mean of its divisors is an integer number (1605360540).

Almost surely, 2^21760379716 is an apocalyptic number.

It is an amenable number.

21760379716 is a deficient number, since it is larger than the sum of its proper divisors (16768273244).

21760379716 is a wasteful number, since it uses less digits than its factorization.

21760379716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139203 (or 139201 counting only the distinct ones).

The product of its (nonzero) digits is 666792, while the sum is 49.

The spelling of 21760379716 in words is "twenty-one billion, seven hundred sixty million, three hundred seventy-nine thousand, seven hundred sixteen".