77157134255 has 16 divisors (see below), whose sum is σ = 93333906624. Its totient is φ = 61230124800.

The previous prime is 77157134251. The next prime is 77157134279. The reversal of 77157134255 is 55243175177.

It is not a de Polignac number, because 77157134255 - 2² = 77157134251 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77157134251) 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, 390014 + ... + 553556.

It is an arithmetic number, because the mean of its divisors is an integer number (5833369164).

Almost surely, 2^77157134255 is an apocalyptic number.

77157134255 is a deficient number, since it is larger than the sum of its proper divisors (16176772369).

77157134255 is a wasteful number, since it uses less digits than its factorization.

77157134255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164306.

The product of its digits is 1029000, while the sum is 47.

The spelling of 77157134255 in words is "seventy-seven billion, one hundred fifty-seven million, one hundred thirty-four thousand, two hundred fifty-five".