27697712544 has 72 divisors (see below), whose sum is σ = 81481441860. Its totient is φ = 8914203648.

The previous prime is 27697712527. The next prime is 27697712557. The reversal of 27697712544 is 44521779672.

27697712544 is a `hidden beast` number, since 2 + 7 + 6 + 97 + 7 + 1 + 2 + 544 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 23574531600 + 4123180944 = 153540^2 + 64212^2 .

It is a tau number, because it is divible by the number of its divisors (72).

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 11 ways as a sum of consecutive naturals, for example, 1649797 + ... + 1666500.

Almost surely, 2^27697712544 is an apocalyptic number.

27697712544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

27697712544 is an abundant number, since it is smaller than the sum of its proper divisors (53783729316).

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

27697712544 is a wasteful number, since it uses less digits than its factorization.

27697712544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3316342 (or 3316331 counting only the distinct ones).

The product of its digits is 5927040, while the sum is 54.

The spelling of 27697712544 in words is "twenty-seven billion, six hundred ninety-seven million, seven hundred twelve thousand, five hundred forty-four".