6517997156 has 24 divisors (see below), whose sum is σ = 12448416960. Its totient is φ = 2961543200.

The previous prime is 6517997131. The next prime is 6517997203.

6517997156 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87065 + ... + 143583.

It is an arithmetic number, because the mean of its divisors is an integer number (518684040).

Almost surely, 2^6517997156 is an apocalyptic number.

It is an amenable number.

6517997156 is a deficient number, since it is larger than the sum of its proper divisors (5930419804).

6517997156 is a wasteful number, since it uses less digits than its factorization.

6517997156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59155 (or 59153 counting only the distinct ones).

The product of its digits is 3572100, while the sum is 56.

The square root of 6517997156 is about 80734.1139543873. The cubic root of 6517997156 is about 1867.9764164404.

The spelling of 6517997156 in words is "six billion, five hundred seventeen million, nine hundred ninety-seven thousand, one hundred fifty-six".