6651415264 has 96 divisors (see below), whose sum is σ = 14769082944. Its totient is φ = 2925711360.

The previous prime is 6651415249. The next prime is 6651415301. The reversal of 6651415264 is 4625141566.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2993674 + ... + 2995894.

It is an arithmetic number, because the mean of its divisors is an integer number (153844614).

Almost surely, 2^6651415264 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 6651415264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7384541472).

6651415264 is an abundant number, since it is smaller than the sum of its proper divisors (8117667680).

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

6651415264 is a wasteful number, since it uses less digits than its factorization.

6651415264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2580 (or 2572 counting only the distinct ones).

The product of its digits is 172800, while the sum is 40.

The square root of 6651415264 is about 81556.2092301990. The cubic root of 6651415264 is about 1880.6357499791.

The spelling of 6651415264 in words is "six billion, six hundred fifty-one million, four hundred fifteen thousand, two hundred sixty-four".