27257117131 has 2 divisors, whose sum is σ = 27257117132. Its totient is φ = 27257117130.

The previous prime is 27257117123. The next prime is 27257117171. The reversal of 27257117131 is 13171175272.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27257117131 - 2³ = 27257117123 is a prime.

It is a super-2 number, since 2×27257117131² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27257117171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13628558565 + 13628558566.

It is an arithmetic number, because the mean of its divisors is an integer number (13628558566).

Almost surely, 2^27257117131 is an apocalyptic number.

27257117131 is a deficient number, since it is larger than the sum of its proper divisors (1).

27257117131 is an equidigital number, since it uses as much as digits as its factorization.

27257117131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20580, while the sum is 37.

The spelling of 27257117131 in words is "twenty-seven billion, two hundred fifty-seven million, one hundred seventeen thousand, one hundred thirty-one".