256612226145731 has 8 divisors (see below), whose sum is σ = 270118296926400. Its totient is φ = 243106171779240.

The previous prime is 256612226145707. The next prime is 256612226145733. The reversal of 256612226145731 is 137541622216652.

256612226145731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-256612226145731 is a prime.

It is a super-3 number, since 3×256612226145731³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256612226145733) 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, 40314716 + ... + 46243926.

It is an arithmetic number, because the mean of its divisors is an integer number (33764787115800).

Almost surely, 2^{256612226145731} is an apocalyptic number.

256612226145731 is a deficient number, since it is larger than the sum of its proper divisors (13506070780669).

256612226145731 is a wasteful number, since it uses less digits than its factorization.

256612226145731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8207089.

The product of its digits is 7257600, while the sum is 53.

The spelling of 256612226145731 in words is "two hundred fifty-six trillion, six hundred twelve billion, two hundred twenty-six million, one hundred forty-five thousand, seven hundred thirty-one".