77696619277 has 4 divisors (see below), whose sum is σ = 77698794880. Its totient is φ = 77694443676.

The previous prime is 77696619241. The next prime is 77696619317. The reversal of 77696619277 is 77291669677.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 77291669677 = 31 ⋅2493279667.

It is a cyclic number.

It is not a de Polignac number, because 77696619277 - 2²⁷ = 77562401549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77696611277) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1033323 + ... + 1105960.

It is an arithmetic number, because the mean of its divisors is an integer number (19424698720).

Almost surely, 2^77696619277 is an apocalyptic number.

It is an amenable number.

77696619277 is a deficient number, since it is larger than the sum of its proper divisors (2175603).

77696619277 is a wasteful number, since it uses less digits than its factorization.

77696619277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2175602.

The product of its digits is 84015792, while the sum is 67.

The spelling of 77696619277 in words is "seventy-seven billion, six hundred ninety-six million, six hundred nineteen thousand, two hundred seventy-seven".