77912832713 has 8 divisors (see below), whose sum is σ = 79817550120. Its totient is φ = 76008325120.

The previous prime is 77912832637. The next prime is 77912832727. The reversal of 77912832713 is 31723821977.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 14435541904 + 63477290809 = 120148^2 + 251947^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77912832713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77912835713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 914393 + ... + 995961.

It is an arithmetic number, because the mean of its divisors is an integer number (9977193765).

Almost surely, 2^77912832713 is an apocalyptic number.

It is an amenable number.

77912832713 is a deficient number, since it is larger than the sum of its proper divisors (1904717407).

77912832713 is a wasteful number, since it uses less digits than its factorization.

77912832713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104907.

The product of its digits is 889056, while the sum is 50.

The spelling of 77912832713 in words is "seventy-seven billion, nine hundred twelve million, eight hundred thirty-two thousand, seven hundred thirteen".