27131651722 has 12 divisors (see below), whose sum is σ = 47341963890. Its totient is φ = 11627850696.

The previous prime is 27131651663. The next prime is 27131651741. The reversal of 27131651722 is 22715613172.

It can be written as a sum of positive squares in only one way, i.e., 27007306921 + 124344801 = 164339^2 + 11151^2 .

It is a super-2 number, since 2×27131651722² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 138426697 + ... + 138426892.

Almost surely, 2^27131651722 is an apocalyptic number.

27131651722 is a deficient number, since it is larger than the sum of its proper divisors (20210312168).

27131651722 is a wasteful number, since it uses less digits than its factorization.

27131651722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276853605 (or 276853598 counting only the distinct ones).

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

The spelling of 27131651722 in words is "twenty-seven billion, one hundred thirty-one million, six hundred fifty-one thousand, seven hundred twenty-two".