7637645813125 has 20 divisors (see below), whose sum is σ = 10105414116732. Its totient is φ = 5750698016000.

The previous prime is 7637645813107. The next prime is 7637645813177. The reversal of 7637645813125 is 5213185467367.

It can be written as a sum of positive squares in 10 ways, for example, as 7048462151236 + 589183661889 = 2654894^2 + 767583^2 .

It is not a de Polignac number, because 7637645813125 - 2²³ = 7637637424517 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7637645813125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 359408002 + ... + 359429251.

Almost surely, 2^{7637645813125} is an apocalyptic number.

It is an amenable number.

7637645813125 is a deficient number, since it is larger than the sum of its proper divisors (2467768303607).

7637645813125 is an equidigital number, since it uses as much as digits as its factorization.

7637645813125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718837290 (or 718837275 counting only the distinct ones).

The product of its digits is 25401600, while the sum is 58.

The spelling of 7637645813125 in words is "seven trillion, six hundred thirty-seven billion, six hundred forty-five million, eight hundred thirteen thousand, one hundred twenty-five".