27140725637 has 2 divisors, whose sum is σ = 27140725638. Its totient is φ = 27140725636.

The previous prime is 27140725603. The next prime is 27140725663. The reversal of 27140725637 is 73652704172.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17278050916 + 9862674721 = 131446^2 + 99311^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27140725637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27140725687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13570362818 + 13570362819.

It is an arithmetic number, because the mean of its divisors is an integer number (13570362819).

Almost surely, 2^27140725637 is an apocalyptic number.

It is an amenable number.

27140725637 is a deficient number, since it is larger than the sum of its proper divisors (1).

27140725637 is an equidigital number, since it uses as much as digits as its factorization.

27140725637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 493920, while the sum is 44.

The spelling of 27140725637 in words is "twenty-seven billion, one hundred forty million, seven hundred twenty-five thousand, six hundred thirty-seven".