27718421364 has 72 divisors (see below), whose sum is σ = 70581420000. Its totient is φ = 9171693504.

The previous prime is 27718421333. The next prime is 27718421387. The reversal of 27718421364 is 46312481772.

27718421364 is a `hidden beast` number, since 277 + 18 + 4 + 2 + 1 + 364 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3985362 + ... + 3992310.

It is an arithmetic number, because the mean of its divisors is an integer number (980297500).

Almost surely, 2^27718421364 is an apocalyptic number.

It is an amenable number.

27718421364 is an abundant number, since it is smaller than the sum of its proper divisors (42862998636).

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

27718421364 is a wasteful number, since it uses less digits than its factorization.

27718421364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7757 (or 7752 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The spelling of 27718421364 in words is "twenty-seven billion, seven hundred eighteen million, four hundred twenty-one thousand, three hundred sixty-four".