2256152136081 has 4 divisors (see below), whose sum is σ = 3008202848112. Its totient is φ = 1504101424052.

The previous prime is 2256152136037. The next prime is 2256152136107. The reversal of 2256152136081 is 1806312516522.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2256152136081 - 2²² = 2256147941777 is a prime.

It is a super-2 number, since 2×2256152136081² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2256152136481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 376025356011 + ... + 376025356016.

It is an arithmetic number, because the mean of its divisors is an integer number (752050712028).

Almost surely, 2^{2256152136081} is an apocalyptic number.

It is an amenable number.

2256152136081 is a deficient number, since it is larger than the sum of its proper divisors (752050712031).

2256152136081 is an equidigital number, since it uses as much as digits as its factorization.

2256152136081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 752050712030.

The product of its (nonzero) digits is 172800, while the sum is 42.

The spelling of 2256152136081 in words is "two trillion, two hundred fifty-six billion, one hundred fifty-two million, one hundred thirty-six thousand, eighty-one".