27677651513 has 2 divisors, whose sum is σ = 27677651514. Its totient is φ = 27677651512.

The previous prime is 27677651399. The next prime is 27677651537. The reversal of 27677651513 is 31515677672.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27287075344 + 390576169 = 165188^2 + 19763^2 .

It is a cyclic number.

It is not a de Polignac number, because 27677651513 - 2⁸ = 27677651257 is a prime.

It is not a weakly prime, because it can be changed into another prime (27677651713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13838825756 + 13838825757.

It is an arithmetic number, because the mean of its divisors is an integer number (13838825757).

Almost surely, 2^27677651513 is an apocalyptic number.

It is an amenable number.

27677651513 is a deficient number, since it is larger than the sum of its proper divisors (1).

27677651513 is an equidigital number, since it uses as much as digits as its factorization.

27677651513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1852200, while the sum is 50.

The spelling of 27677651513 in words is "twenty-seven billion, six hundred seventy-seven million, six hundred fifty-one thousand, five hundred thirteen".