27256392377 has 2 divisors, whose sum is σ = 27256392378. Its totient is φ = 27256392376.

The previous prime is 27256392347. The next prime is 27256392389. The reversal of 27256392377 is 77329365272.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14098237696 + 13158154681 = 118736^2 + 114709^2 .

It is a cyclic number.

It is not a de Polignac number, because 27256392377 - 2²² = 27252198073 is a prime.

It is not a weakly prime, because it can be changed into another prime (27256392347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13628196188 + 13628196189.

It is an arithmetic number, because the mean of its divisors is an integer number (13628196189).

Almost surely, 2^27256392377 is an apocalyptic number.

It is an amenable number.

27256392377 is a deficient number, since it is larger than the sum of its proper divisors (1).

27256392377 is an equidigital number, since it uses as much as digits as its factorization.

27256392377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6667920, while the sum is 53.

The spelling of 27256392377 in words is "twenty-seven billion, two hundred fifty-six million, three hundred ninety-two thousand, three hundred seventy-seven".