117776368477 has 4 divisors (see below), whose sum is σ = 117777057916. Its totient is φ = 117775679040.

The previous prime is 117776368471. The next prime is 117776368513. The reversal of 117776368477 is 774863677711.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 78546228121 + 39230140356 = 280261^2 + 198066^2 .

It is a cyclic number.

It is not a de Polignac number, because 117776368477 - 2¹⁹ = 117775844189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117776368471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123643 + ... + 500839.

It is an arithmetic number, because the mean of its divisors is an integer number (29444264479).

Almost surely, 2^117776368477 is an apocalyptic number.

It is an amenable number.

117776368477 is a deficient number, since it is larger than the sum of its proper divisors (689439).

117776368477 is an equidigital number, since it uses as much as digits as its factorization.

117776368477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689438.

The product of its digits is 58084992, while the sum is 64.

The spelling of 117776368477 in words is "one hundred seventeen billion, seven hundred seventy-six million, three hundred sixty-eight thousand, four hundred seventy-seven".