6500626138 has 8 divisors (see below), whose sum is σ = 10087178580. Its totient is φ = 3138233280.

The previous prime is 6500626133. The next prime is 6500626147. The reversal of 6500626138 is 8316260056.

It can be written as a sum of positive squares in 2 ways, for example, as 6500068129 + 558009 = 80623^2 + 747^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 6500626097 and 6500626106.

It is not an unprimeable number, because it can be changed into a prime (6500626133) 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, 56039823 + ... + 56039938.

Almost surely, 2^6500626138 is an apocalyptic number.

6500626138 is a deficient number, since it is larger than the sum of its proper divisors (3586552442).

6500626138 is a wasteful number, since it uses less digits than its factorization.

6500626138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112079792.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 6500626138 is about 80626.4605325076. The cubic root of 6500626138 is about 1866.3155012812.

The spelling of 6500626138 in words is "six billion, five hundred million, six hundred twenty-six thousand, one hundred thirty-eight".