77893401165 has 16 divisors (see below), whose sum is σ = 124633362048. Its totient is φ = 41541840576.

The previous prime is 77893401161. The next prime is 77893401203. The reversal of 77893401165 is 56110439877.

It is a happy number.

It is not a de Polignac number, because 77893401165 - 2² = 77893401161 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77893401161) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 588504 + ... + 708606.

It is an arithmetic number, because the mean of its divisors is an integer number (7789585128).

Almost surely, 2^77893401165 is an apocalyptic number.

It is an amenable number.

77893401165 is a deficient number, since it is larger than the sum of its proper divisors (46739960883).

77893401165 is a wasteful number, since it uses less digits than its factorization.

77893401165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163348.

The product of its (nonzero) digits is 1270080, while the sum is 51.

The spelling of 77893401165 in words is "seventy-seven billion, eight hundred ninety-three million, four hundred one thousand, one hundred sixty-five".