8513118722 has 16 divisors (see below), whose sum is σ = 13532211000. Its totient is φ = 4009541760.

The previous prime is 8513118721. The next prime is 8513118743. The reversal of 8513118722 is 2278113158.

It can be written as a sum of positive squares in 4 ways, for example, as 7382074561 + 1131044161 = 85919^2 + 33631^2 .

It is not an unprimeable number, because it can be changed into a prime (8513118721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1787597 + ... + 1792352.

Almost surely, 2^8513118722 is an apocalyptic number.

8513118722 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

8513118722 is a deficient number, since it is larger than the sum of its proper divisors (5019092278).

8513118722 is a wasteful number, since it uses less digits than its factorization.

8513118722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3580021.

The product of its digits is 26880, while the sum is 38.

The square root of 8513118722 is about 92266.5634019172. The cubic root of 8513118722 is about 2041.8769347796.

The spelling of 8513118722 in words is "eight billion, five hundred thirteen million, one hundred eighteen thousand, seven hundred twenty-two".