27158895864 has 32 divisors (see below), whose sum is σ = 75441378000. Its totient is φ = 9052965216.

The previous prime is 27158895817. The next prime is 27158895877. The reversal of 27158895864 is 46859885172.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62867599 + ... + 62868030.

Almost surely, 2^27158895864 is an apocalyptic number.

27158895864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

27158895864 is an abundant number, since it is smaller than the sum of its proper divisors (48282482136).

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

27158895864 is a wasteful number, since it uses less digits than its factorization.

27158895864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125735644 (or 125735634 counting only the distinct ones).

The product of its digits is 38707200, while the sum is 63.

The spelling of 27158895864 in words is "twenty-seven billion, one hundred fifty-eight million, eight hundred ninety-five thousand, eight hundred sixty-four".