2256273711918 has 128 divisors (see below), whose sum is σ = 5403511296000. Its totient is φ = 695265707520.

The previous prime is 2256273711917. The next prime is 2256273711929. The reversal of 2256273711918 is 8191173726522.

2256273711918 is a `hidden beast` number, since 2 + 2 + 5 + 627 + 3 + 7 + 1 + 1 + 9 + 1 + 8 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2256273711911) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 40234543 + ... + 40290581.

It is an arithmetic number, because the mean of its divisors is an integer number (42214932000).

Almost surely, 2^{2256273711918} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2256273711918, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2701755648000).

2256273711918 is an abundant number, since it is smaller than the sum of its proper divisors (3147237584082).

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

2256273711918 is a wasteful number, since it uses less digits than its factorization.

2256273711918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56847 (or 56841 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 54.

The spelling of 2256273711918 in words is "two trillion, two hundred fifty-six billion, two hundred seventy-three million, seven hundred eleven thousand, nine hundred eighteen".