77912093165 has 8 divisors (see below), whose sum is σ = 93673966968. Its totient is φ = 62210037760.

The previous prime is 77912093159. The next prime is 77912093173. The reversal of 77912093165 is 56139021977.

It can be written as a sum of positive squares in 4 ways, for example, as 38167684 + 77873925481 = 6178^2 + 279059^2 .

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

It is not a de Polignac number, because 77912093165 - 2¹⁶ = 77912027629 is a prime.

It is a super-2 number, since 2×77912093165² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14951732 + ... + 14956941.

It is an arithmetic number, because the mean of its divisors is an integer number (11709245871).

Almost surely, 2^77912093165 is an apocalyptic number.

It is an amenable number.

77912093165 is a deficient number, since it is larger than the sum of its proper divisors (15761873803).

77912093165 is a wasteful number, since it uses less digits than its factorization.

77912093165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29909199.

The product of its (nonzero) digits is 714420, while the sum is 50.

The spelling of 77912093165 in words is "seventy-seven billion, nine hundred twelve million, ninety-three thousand, one hundred sixty-five".