6690976647888 has 160 divisors (see below), whose sum is σ = 18699528153600. Its totient is φ = 2049380057088.

The previous prime is 6690976647877. The next prime is 6690976647899. The reversal of 6690976647888 is 8887466790966.

It is an interprime number because it is at equal distance from previous prime (6690976647877) and next prime (6690976647899).

It is a self number, because there is not a number n which added to its sum of digits gives 6690976647888.

It is a congruent number.

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, 496467006 + ... + 496480482.

It is an arithmetic number, because the mean of its divisors is an integer number (116872050960).

Almost surely, 2^{6690976647888} 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 6690976647888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9349764076800).

6690976647888 is an abundant number, since it is smaller than the sum of its proper divisors (12008551505712).

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

6690976647888 is a wasteful number, since it uses less digits than its factorization.

6690976647888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17069 (or 17063 counting only the distinct ones).

The product of its (nonzero) digits is 10534551552, while the sum is 84.

The spelling of 6690976647888 in words is "six trillion, six hundred ninety billion, nine hundred seventy-six million, six hundred forty-seven thousand, eight hundred eighty-eight".