27045342864 has 60 divisors (see below), whose sum is σ = 77117520636. Its totient is φ = 8845015296.

The previous prime is 27045342853. The next prime is 27045342871. The reversal of 27045342864 is 46824354072.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 15028798464 + 12016544400 = 122592^2 + 109620^2 .

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, 1764207 + ... + 1779470.

Almost surely, 2^27045342864 is an apocalyptic number.

27045342864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

27045342864 is an abundant number, since it is smaller than the sum of its proper divisors (50072177772).

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

27045342864 is a wasteful number, since it uses less digits than its factorization.

27045342864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3543744 (or 3543735 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 45.

The spelling of 27045342864 in words is "twenty-seven billion, forty-five million, three hundred forty-two thousand, eight hundred sixty-four".