7158998517 has 12 divisors (see below), whose sum is σ = 10491976320. Its totient is φ = 4338786760.

The previous prime is 7158998507. The next prime is 7158998521.

It is a happy number.

7158998517 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 7158998517 - 2⁴ = 7158998501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7158998507) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9860517 + ... + 9861242.

It is an arithmetic number, because the mean of its divisors is an integer number (874331360).

Almost surely, 2^7158998517 is an apocalyptic number.

It is an amenable number.

7158998517 is a deficient number, since it is larger than the sum of its proper divisors (3332977803).

7158998517 is a wasteful number, since it uses less digits than its factorization.

7158998517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19721784 (or 19721773 counting only the distinct ones).

The product of its digits is 6350400, while the sum is 60.

The square root of 7158998517 is about 84610.8652420007. The cubic root of 7158998517 is about 1927.3063730093.

The spelling of 7158998517 in words is "seven billion, one hundred fifty-eight million, nine hundred ninety-eight thousand, five hundred seventeen".