27913916664 has 24 divisors (see below), whose sum is σ = 75600191160. Its totient is φ = 9304638864.

The previous prime is 27913916663. The next prime is 27913916677. The reversal of 27913916664 is 46661931972.

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 27913916664.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27913916663) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 193846572 + ... + 193846715.

It is an arithmetic number, because the mean of its divisors is an integer number (3150007965).

Almost surely, 2^27913916664 is an apocalyptic number.

27913916664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

27913916664 is an abundant number, since it is smaller than the sum of its proper divisors (47686274496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27913916664 is a wasteful number, since it uses less digits than its factorization.

27913916664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387693299 (or 387693292 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 54.

The spelling of 27913916664 in words is "twenty-seven billion, nine hundred thirteen million, nine hundred sixteen thousand, six hundred sixty-four".