77308508085 has 8 divisors (see below), whose sum is σ = 123693612960. Its totient is φ = 41231204304.

The previous prime is 77308508027. The next prime is 77308508089. The reversal of 77308508085 is 58080580377.

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

It is not a de Polignac number, because 77308508085 - 2²² = 77304313781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77308508089) 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, 2576950255 + ... + 2576950284.

It is an arithmetic number, because the mean of its divisors is an integer number (15461701620).

Almost surely, 2^77308508085 is an apocalyptic number.

It is an amenable number.

77308508085 is a deficient number, since it is larger than the sum of its proper divisors (46385104875).

77308508085 is a wasteful number, since it uses less digits than its factorization.

77308508085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5153900547.

The product of its (nonzero) digits is 1881600, while the sum is 51.

The spelling of 77308508085 in words is "seventy-seven billion, three hundred eight million, five hundred eight thousand, eighty-five".