77786147586423 has 16 divisors (see below), whose sum is σ = 108224720499456. Its totient is φ = 49602524664000.

The previous prime is 77786147586397. The next prime is 77786147586437. The reversal of 77786147586423 is 32468574168777.

It is not a de Polignac number, because 77786147586423 - 2⁶ = 77786147586359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77786147586473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12538548 + ... + 17685798.

It is an arithmetic number, because the mean of its divisors is an integer number (6764045031216).

Almost surely, 2^{77786147586423} is an apocalyptic number.

77786147586423 is a deficient number, since it is larger than the sum of its proper divisors (30438572913033).

77786147586423 is a wasteful number, since it uses less digits than its factorization.

77786147586423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5366294.

The product of its digits is 2655313920, while the sum is 75.

The spelling of 77786147586423 in words is "seventy-seven trillion, seven hundred eighty-six billion, one hundred forty-seven million, five hundred eighty-six thousand, four hundred twenty-three".