2256751026666 has 24 divisors (see below), whose sum is σ = 5070724530144. Its totient is φ = 752250342060.

The previous prime is 2256751026661. The next prime is 2256751026743. The reversal of 2256751026666 is 6666201576522.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (2256751026661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2321759830 + ... + 2321760801.

It is an arithmetic number, because the mean of its divisors is an integer number (211280188756).

Almost surely, 2^{2256751026666} is an apocalyptic number.

2256751026666 is an abundant number, since it is smaller than the sum of its proper divisors (2813973503478).

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

2256751026666 is an equidigital number, since it uses as much as digits as its factorization.

2256751026666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4643520648 (or 4643520636 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 54.

The spelling of 2256751026666 in words is "two trillion, two hundred fifty-six billion, seven hundred fifty-one million, twenty-six thousand, six hundred sixty-six".