77679879658383 has 4 divisors (see below), whose sum is σ = 103573172877848. Its totient is φ = 51786586438920.

The previous prime is 77679879658349. The next prime is 77679879658429. The reversal of 77679879658383 is 38385697897677.

It is a happy number.

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

It is not a de Polignac number, because 77679879658383 - 2⁹ = 77679879657871 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 (77679879658883) 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, 12946646609728 + ... + 12946646609733.

It is an arithmetic number, because the mean of its divisors is an integer number (25893293219462).

Almost surely, 2^{77679879658383} is an apocalyptic number.

77679879658383 is a deficient number, since it is larger than the sum of its proper divisors (25893293219465).

77679879658383 is a wasteful number, since it uses less digits than its factorization.

77679879658383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25893293219464.

The product of its digits is 161310320640, while the sum is 93.

The spelling of 77679879658383 in words is "seventy-seven trillion, six hundred seventy-nine billion, eight hundred seventy-nine million, six hundred fifty-eight thousand, three hundred eighty-three".