2646660430266 has 16 divisors (see below), whose sum is σ = 5380096613088. Its totient is φ = 867757518000.

The previous prime is 2646660430217. The next prime is 2646660430307. The reversal of 2646660430266 is 6620340666462.

It is a super-2 number, since 2×2646660430266² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3615655960 + ... + 3615656691.

It is an arithmetic number, because the mean of its divisors is an integer number (336256038318).

Almost surely, 2^{2646660430266} is an apocalyptic number.

2646660430266 is an abundant number, since it is smaller than the sum of its proper divisors (2733436182822).

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

2646660430266 is a wasteful number, since it uses less digits than its factorization.

2646660430266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7231312717.

The product of its (nonzero) digits is 8957952, while the sum is 51.

The spelling of 2646660430266 in words is "two trillion, six hundred forty-six billion, six hundred sixty million, four hundred thirty thousand, two hundred sixty-six".