2664311100656 has 80 divisors (see below), whose sum is σ = 5567550320640. Its totient is φ = 1231523758080.

The previous prime is 2664311100623. The next prime is 2664311100673. The reversal of 2664311100656 is 6560011134662.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8620901 + ... + 8924603.

It is an arithmetic number, because the mean of its divisors is an integer number (69594379008).

Almost surely, 2^{2664311100656} 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 2664311100656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2783775160320).

2664311100656 is an abundant number, since it is smaller than the sum of its proper divisors (2903239219984).

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

2664311100656 is a wasteful number, since it uses less digits than its factorization.

2664311100656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304534 (or 304528 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 41.

The spelling of 2664311100656 in words is "two trillion, six hundred sixty-four billion, three hundred eleven million, one hundred thousand, six hundred fifty-six".