2256172382292 has 72 divisors (see below), whose sum is σ = 5509030310784. Its totient is φ = 718602546816.

The previous prime is 2256172382281. The next prime is 2256172382309. The reversal of 2256172382292 is 2922832716522.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 5863173 + ... + 6236115.

It is an arithmetic number, because the mean of its divisors is an integer number (76514309872).

Almost surely, 2^{2256172382292} 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 2256172382292, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2754515155392).

2256172382292 is an abundant number, since it is smaller than the sum of its proper divisors (3252857928492).

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

2256172382292 is a wasteful number, since it uses less digits than its factorization.

2256172382292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373949 (or 373924 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 51.

The spelling of 2256172382292 in words is "two trillion, two hundred fifty-six billion, one hundred seventy-two million, three hundred eighty-two thousand, two hundred ninety-two".