2659267988664 has 128 divisors (see below), whose sum is σ = 7872827719680. Its totient is φ = 732485347200.

The previous prime is 2659267988647. The next prime is 2659267988693. The reversal of 2659267988664 is 4668897629562.

It is a self number, because there is not a number n which added to its sum of digits gives 2659267988664.

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, 398959 + ... + 2340449.

It is an arithmetic number, because the mean of its divisors is an integer number (61506466560).

Almost surely, 2^{2659267988664} is an apocalyptic number.

2659267988664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2659267988664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3936413859840).

2659267988664 is an abundant number, since it is smaller than the sum of its proper divisors (5213559731016).

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

2659267988664 is a wasteful number, since it uses less digits than its factorization.

2659267988664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1941801 (or 1941797 counting only the distinct ones).

The product of its digits is 3762339840, while the sum is 78.

The spelling of 2659267988664 in words is "two trillion, six hundred fifty-nine billion, two hundred sixty-seven million, nine hundred eighty-eight thousand, six hundred sixty-four".