6377722138 has 16 divisors (see below), whose sum is σ = 9631917000. Its totient is φ = 3167102016.

The previous prime is 6377722133. The next prime is 6377722157. The reversal of 6377722138 is 8312277736.

It can be written as a sum of positive squares in 4 ways, for example, as 4014109449 + 2363612689 = 63357^2 + 48617^2 .

It is not an unprimeable number, because it can be changed into a prime (6377722133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1106488 + ... + 1112236.

Almost surely, 2^6377722138 is an apocalyptic number.

6377722138 is a deficient number, since it is larger than the sum of its proper divisors (3254194862).

6377722138 is a wasteful number, since it uses less digits than its factorization.

6377722138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9441.

The product of its digits is 592704, while the sum is 46.

The square root of 6377722138 is about 79860.6419833950. The cubic root of 6377722138 is about 1854.4787649231.

The spelling of 6377722138 in words is "six billion, three hundred seventy-seven million, seven hundred twenty-two thousand, one hundred thirty-eight".