77706793379 has 4 divisors (see below), whose sum is σ = 77876830584. Its totient is φ = 77536756176.

The previous prime is 77706793337. The next prime is 77706793387. The reversal of 77706793379 is 97339760777.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 77706793379 - 2²⁰ = 77705744803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77706793309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85017917 + ... + 85018830.

It is an arithmetic number, because the mean of its divisors is an integer number (19469207646).

Almost surely, 2^77706793379 is an apocalyptic number.

77706793379 is a deficient number, since it is larger than the sum of its proper divisors (170037205).

77706793379 is a wasteful number, since it uses less digits than its factorization.

77706793379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170037204.

The product of its (nonzero) digits is 73513818, while the sum is 65.

The spelling of 77706793379 in words is "seventy-seven billion, seven hundred six million, seven hundred ninety-three thousand, three hundred seventy-nine".