27310537081 has 9 divisors (see below), whose sum is σ = 27791195023. Its totient is φ = 26838061600.

The previous prime is 27310537061. The next prime is 27310537127. The reversal of 27310537081 is 18073501372.

The square root of 27310537081 is 165259.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 13937927481 + 13372609600 = 118059^2 + 115640^2 .

It is not a de Polignac number, because 27310537081 - 2²¹ = 27308439929 is a prime.

It is a super-2 number, since 2×27310537081² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27310537081.

It is not an unprimeable number, because it can be changed into a prime (27310537061) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 9748881 + ... + 9751681.

Almost surely, 2^27310537081 is an apocalyptic number.

27310537081 is the 165259-th square number.

27310537081 is the 82630-th centered octagonal number.

It is an amenable number.

27310537081 is a deficient number, since it is larger than the sum of its proper divisors (480657942).

27310537081 is an frugal number, since it uses more digits than its factorization.

27310537081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5720 (or 2860 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 37.

The spelling of 27310537081 in words is "twenty-seven billion, three hundred ten million, five hundred thirty-seven thousand, eighty-one".