27157323761 has 16 divisors (see below), whose sum is σ = 30018014208. Its totient is φ = 24437952000.

The previous prime is 27157323719. The next prime is 27157323799. The reversal of 27157323761 is 16732375172.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 27157323761 - 2³⁴ = 9977454577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27157320761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 971936 + ... + 999486.

It is an arithmetic number, because the mean of its divisors is an integer number (1876125888).

Almost surely, 2^27157323761 is an apocalyptic number.

It is an amenable number.

27157323761 is a deficient number, since it is larger than the sum of its proper divisors (2860690447).

27157323761 is a wasteful number, since it uses less digits than its factorization.

27157323761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30112.

The product of its digits is 370440, while the sum is 44.

The spelling of 27157323761 in words is "twenty-seven billion, one hundred fifty-seven million, three hundred twenty-three thousand, seven hundred sixty-one".