8107156445 has 18 divisors (see below), whose sum is σ = 9892417626. Its totient is φ = 6378292800.

The previous prime is 8107156441. The next prime is 8107156457. The reversal of 8107156445 is 5446517018.

It can be written as a sum of positive squares in 3 ways, for example, as 3335524516 + 4771631929 = 57754^2 + 69077^2 .

It is not a de Polignac number, because 8107156445 - 2² = 8107156441 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 (8107156441) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 13489145 + ... + 13489745.

It is an arithmetic number, because the mean of its divisors is an integer number (549578757).

Almost surely, 2^8107156445 is an apocalyptic number.

It is an amenable number.

8107156445 is a deficient number, since it is larger than the sum of its proper divisors (1785261181).

8107156445 is an frugal number, since it uses more digits than its factorization.

8107156445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1341 (or 673 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 41.

The square root of 8107156445 is about 90039.7492499840. The cubic root of 8107156445 is about 2008.8901280098.

The spelling of 8107156445 in words is "eight billion, one hundred seven million, one hundred fifty-six thousand, four hundred forty-five".