2256745155841 has 8 divisors (see below), whose sum is σ = 2467589501664. Its totient is φ = 2046848425920.

The previous prime is 2256745155839. The next prime is 2256745155887. The reversal of 2256745155841 is 1485515476522.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2256745155841 - 2¹ = 2256745155839 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2256745155811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 236898991 + ... + 236908516.

It is an arithmetic number, because the mean of its divisors is an integer number (308448687708).

Almost surely, 2^{2256745155841} is an apocalyptic number.

It is an amenable number.

2256745155841 is a deficient number, since it is larger than the sum of its proper divisors (210844345823).

2256745155841 is a wasteful number, since it uses less digits than its factorization.

2256745155841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473807951.

The product of its digits is 13440000, while the sum is 55.

The spelling of 2256745155841 in words is "two trillion, two hundred fifty-six billion, seven hundred forty-five million, one hundred fifty-five thousand, eight hundred forty-one".