77986137112523 has 2 divisors, whose sum is σ = 77986137112524. Its totient is φ = 77986137112522.

The previous prime is 77986137112493. The next prime is 77986137112607. The reversal of 77986137112523 is 32521173168977.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 77986137112523 - 2¹² = 77986137108427 is a prime.

It is not a weakly prime, because it can be changed into another prime (77986137412523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38993068556261 + 38993068556262.

It is an arithmetic number, because the mean of its divisors is an integer number (38993068556262).

Almost surely, 2^{77986137112523} is an apocalyptic number.

77986137112523 is a deficient number, since it is larger than the sum of its proper divisors (1).

77986137112523 is an equidigital number, since it uses as much as digits as its factorization.

77986137112523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26671680, while the sum is 62.

The spelling of 77986137112523 in words is "seventy-seven trillion, nine hundred eighty-six billion, one hundred thirty-seven million, one hundred twelve thousand, five hundred twenty-three".