6516556156 has 18 divisors (see below), whose sum is σ = 12534946760. Its totient is φ = 2962070760.

The previous prime is 6516556073. The next prime is 6516556177.

6516556156 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6731496 + ... + 6732463.

Almost surely, 2^6516556156 is an apocalyptic number.

It is an amenable number.

6516556156 is a deficient number, since it is larger than the sum of its proper divisors (6018390604).

6516556156 is a wasteful number, since it uses less digits than its factorization.

6516556156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13463985 (or 13463972 counting only the distinct ones).

The product of its digits is 810000, while the sum is 46.

The square root of 6516556156 is about 80725.1891047646. The cubic root of 6516556156 is about 1867.8387487724.

The spelling of 6516556156 in words is "six billion, five hundred sixteen million, five hundred fifty-six thousand, one hundred fifty-six".