77514112517 has 2 divisors, whose sum is σ = 77514112518. Its totient is φ = 77514112516.

The previous prime is 77514112393. The next prime is 77514112531. The reversal of 77514112517 is 71521141577.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74904026596 + 2610085921 = 273686^2 + 51089^2 .

It is an emirp because it is prime and its reverse (71521141577) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77514112517 - 2²⁰ = 77513063941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77514112817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38757056258 + 38757056259.

It is an arithmetic number, because the mean of its divisors is an integer number (38757056259).

Almost surely, 2^77514112517 is an apocalyptic number.

It is an amenable number.

77514112517 is a deficient number, since it is larger than the sum of its proper divisors (1).

77514112517 is an equidigital number, since it uses as much as digits as its factorization.

77514112517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68600, while the sum is 41.

The spelling of 77514112517 in words is "seventy-seven billion, five hundred fourteen million, one hundred twelve thousand, five hundred seventeen".