77349183365 has 4 divisors (see below), whose sum is σ = 92819020044. Its totient is φ = 61879346688.

The previous prime is 77349183349. The next prime is 77349183413. The reversal of 77349183365 is 56338194377.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56338194377 = 61 ⋅923576957.

It can be written as a sum of positive squares in 2 ways, for example, as 57646569409 + 19702613956 = 240097^2 + 140366^2 .

It is a cyclic number.

It is not a de Polignac number, because 77349183365 - 2⁴ = 77349183349 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77349183365.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7734918332 + ... + 7734918341.

It is an arithmetic number, because the mean of its divisors is an integer number (23204755011).

Almost surely, 2^77349183365 is an apocalyptic number.

It is an amenable number.

77349183365 is a deficient number, since it is larger than the sum of its proper divisors (15469836679).

77349183365 is a wasteful number, since it uses less digits than its factorization.

77349183365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15469836678.

The product of its digits is 11430720, while the sum is 56.

The spelling of 77349183365 in words is "seventy-seven billion, three hundred forty-nine million, one hundred eighty-three thousand, three hundred sixty-five".