27287431356 has 12 divisors (see below), whose sum is σ = 63670673192. Its totient is φ = 9095810448.

The previous prime is 27287431337. The next prime is 27287431373. The reversal of 27287431356 is 65313478272.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1136976295 + ... + 1136976318.

Almost surely, 2^27287431356 is an apocalyptic number.

It is an amenable number.

27287431356 is an abundant number, since it is smaller than the sum of its proper divisors (36383241836).

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

27287431356 is a wasteful number, since it uses less digits than its factorization.

27287431356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2273952620 (or 2273952618 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 48.

The spelling of 27287431356 in words is "twenty-seven billion, two hundred eighty-seven million, four hundred thirty-one thousand, three hundred fifty-six".