77823164465 has 16 divisors (see below), whose sum is σ = 93818096640. Its totient is φ = 61971887040.

The previous prime is 77823164381. The next prime is 77823164477. The reversal of 77823164465 is 56446132877.

It is not a de Polignac number, because 77823164465 - 2¹⁸ = 77822902321 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3119672 + ... + 3144518.

It is an arithmetic number, because the mean of its divisors is an integer number (5863631040).

Almost surely, 2^77823164465 is an apocalyptic number.

It is an amenable number.

77823164465 is a deficient number, since it is larger than the sum of its proper divisors (15994932175).

77823164465 is a wasteful number, since it uses less digits than its factorization.

77823164465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27712.

The product of its digits is 6773760, while the sum is 53.

The spelling of 77823164465 in words is "seventy-seven billion, eight hundred twenty-three million, one hundred sixty-four thousand, four hundred sixty-five".