86177538277 has 2 divisors, whose sum is σ = 86177538278. Its totient is φ = 86177538276.

The previous prime is 86177538241. The next prime is 86177538289. The reversal of 86177538277 is 77283577168.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63955375236 + 22222163041 = 252894^2 + 149071^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86177538277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86177538217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43088769138 + 43088769139.

It is an arithmetic number, because the mean of its divisors is an integer number (43088769139).

Almost surely, 2^86177538277 is an apocalyptic number.

It is an amenable number.

86177538277 is a deficient number, since it is larger than the sum of its proper divisors (1).

86177538277 is an equidigital number, since it uses as much as digits as its factorization.

86177538277 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27659520, while the sum is 61.

The spelling of 86177538277 in words is "eighty-six billion, one hundred seventy-seven million, five hundred thirty-eight thousand, two hundred seventy-seven".