6377665871 has 4 divisors (see below), whose sum is σ = 6378339744. Its totient is φ = 6376992000.

The previous prime is 6377665843. The next prime is 6377665919. The reversal of 6377665871 is 1785667736.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6377665871 - 2²⁶ = 6310557007 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 (6377665831) 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 3 ways as a sum of consecutive naturals, for example, 322535 + ... + 341736.

It is an arithmetic number, because the mean of its divisors is an integer number (1594584936).

Almost surely, 2^6377665871 is an apocalyptic number.

6377665871 is a deficient number, since it is larger than the sum of its proper divisors (673873).

6377665871 is an equidigital number, since it uses as much as digits as its factorization.

6377665871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673872.

The product of its digits is 8890560, while the sum is 56.

The square root of 6377665871 is about 79860.2897002008. The cubic root of 6377665871 is about 1854.4733112381.

The spelling of 6377665871 in words is "six billion, three hundred seventy-seven million, six hundred sixty-five thousand, eight hundred seventy-one".