6375138757 has 4 divisors (see below), whose sum is σ = 6865534060. Its totient is φ = 5884743456.

The previous prime is 6375138743. The next prime is 6375138767. The reversal of 6375138757 is 7578315736.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2600388036 + 3774750721 = 50994^2 + 61439^2 .

It is a cyclic number.

It is not a de Polignac number, because 6375138757 - 2⁷ = 6375138629 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 (6375138767) 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, 245197632 + ... + 245197657.

It is an arithmetic number, because the mean of its divisors is an integer number (1716383515).

Almost surely, 2^6375138757 is an apocalyptic number.

It is an amenable number.

6375138757 is a deficient number, since it is larger than the sum of its proper divisors (490395303).

6375138757 is a wasteful number, since it uses less digits than its factorization.

6375138757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490395302.

The product of its digits is 3704400, while the sum is 52.

The square root of 6375138757 is about 79844.4660386680. The cubic root of 6375138757 is about 1854.2283373614.

The spelling of 6375138757 in words is "six billion, three hundred seventy-five million, one hundred thirty-eight thousand, seven hundred fifty-seven".