6664278929336 has 256 divisors, whose sum is σ = 15917414768640. Its totient is φ = 2550401925120.

The previous prime is 6664278929317. The next prime is 6664278929389. The reversal of 6664278929336 is 6339298724666.

It is a super-2 number, since 2×6664278929336² (a number of 26 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (71) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 6664278929336.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 306294170 + ... + 306315926.

It is an arithmetic number, because the mean of its divisors is an integer number (62177401440).

Almost surely, 2^{6664278929336} 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 6664278929336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7958707384320).

6664278929336 is an abundant number, since it is smaller than the sum of its proper divisors (9253135839304).

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

6664278929336 is a wasteful number, since it uses less digits than its factorization.

6664278929336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22022 (or 22018 counting only the distinct ones).

The product of its digits is 846526464, while the sum is 71.

The spelling of 6664278929336 in words is "six trillion, six hundred sixty-four billion, two hundred seventy-eight million, nine hundred twenty-nine thousand, three hundred thirty-six".