7165975640356 has 81 divisors (see below), whose sum is σ = 13690872890163. Its totient is φ = 3280422000960.

The previous prime is 7165975640321. The next prime is 7165975640357. The reversal of 7165975640356 is 6530465795617.

The square root of 7165975640356 is 2676934.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 3878339422500 + 3287636217856 = 1969350^2 + 1813184^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7165975640357) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 10370441971 + ... + 10370442661.

Almost surely, 2^{7165975640356} is an apocalyptic number.

7165975640356 is the 2676934-th square number.

It is an amenable number.

7165975640356 is a deficient number, since it is larger than the sum of its proper divisors (6524897249807).

7165975640356 is an equidigital number, since it uses as much as digits as its factorization.

7165975640356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1710 (or 855 counting only the distinct ones).

The product of its (nonzero) digits is 142884000, while the sum is 64.

Multiplying 7165975640356 by its sum of digits (64), we get a square (458622440982784 = 21415472²).

The spelling of 7165975640356 in words is "seven trillion, one hundred sixty-five billion, nine hundred seventy-five million, six hundred forty thousand, three hundred fifty-six".