6511666002 has 64 divisors (see below), whose sum is σ = 13872660480. Its totient is φ = 2034230400.

The previous prime is 6511665989. The next prime is 6511666027. The reversal of 6511666002 is 2006661156.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1056943 + ... + 1063085.

It is an arithmetic number, because the mean of its divisors is an integer number (216760320).

Almost surely, 2^6511666002 is an apocalyptic number.

6511666002 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

6511666002 is an abundant number, since it is smaller than the sum of its proper divisors (7360994478).

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

6511666002 is a wasteful number, since it uses less digits than its factorization.

6511666002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6359.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 6511666002 is about 80694.8945225161. The cubic root of 6511666002 is about 1867.3714106751.

The spelling of 6511666002 in words is "six billion, five hundred eleven million, six hundred sixty-six thousand, two".