77680028159 has 8 divisors (see below), whose sum is σ = 77777418240. Its totient is φ = 77582675800.

The previous prime is 77680028149. The next prime is 77680028189. The reversal of 77680028159 is 95182008677.

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

It is a cyclic number.

It is not a de Polignac number, because 77680028159 - 2²⁰ = 77678979583 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 77680028159.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77680028149) 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, 8570372 + ... + 8579430.

It is an arithmetic number, because the mean of its divisors is an integer number (9722177280).

Almost surely, 2^77680028159 is an apocalyptic number.

77680028159 is a deficient number, since it is larger than the sum of its proper divisors (97390081).

77680028159 is an equidigital number, since it uses as much as digits as its factorization.

77680028159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18861.

The product of its (nonzero) digits is 1693440, while the sum is 53.

The spelling of 77680028159 in words is "seventy-seven billion, six hundred eighty million, twenty-eight thousand, one hundred fifty-nine".