8115788522 has 4 divisors (see below), whose sum is σ = 12173682786. Its totient is φ = 4057894260.

The previous prime is 8115788521. The next prime is 8115788539. The reversal of 8115788522 is 2258875118.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 8083628281 + 32160241 = 89909^2 + 5671^2 .

It is not an unprimeable number, because it can be changed into a prime (8115788521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2028947129 + ... + 2028947132.

Almost surely, 2^8115788522 is an apocalyptic number.

8115788522 is a deficient number, since it is larger than the sum of its proper divisors (4057894264).

8115788522 is a wasteful number, since it uses less digits than its factorization.

8115788522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4057894263.

The product of its digits is 358400, while the sum is 47.

The square root of 8115788522 is about 90087.6713096748. The cubic root of 8115788522 is about 2009.6028622246.

The spelling of 8115788522 in words is "eight billion, one hundred fifteen million, seven hundred eighty-eight thousand, five hundred twenty-two".