6515166656 has 56 divisors (see below), whose sum is σ = 13215640320. Its totient is φ = 3186024192.

The previous prime is 6515166653. The next prime is 6515166659. The reversal of 6515166656 is 6566615156.

It is an interprime number because it is at equal distance from previous prime (6515166653) and next prime (6515166659).

It is a self number, because there is not a number n which added to its sum of digits gives 6515166656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6515166653) by changing a digit.

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, 534971 + ... + 547013.

Almost surely, 2^6515166656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6515166656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6607820160).

6515166656 is an abundant number, since it is smaller than the sum of its proper divisors (6700473664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6515166656 is a wasteful number, since it uses less digits than its factorization.

6515166656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12241 (or 12231 counting only the distinct ones).

The product of its digits is 972000, while the sum is 47.

The square root of 6515166656 is about 80716.5822864175. The cubic root of 6515166656 is about 1867.7059819977.

The spelling of 6515166656 in words is "six billion, five hundred fifteen million, one hundred sixty-six thousand, six hundred fifty-six".