256126061065 has 8 divisors (see below), whose sum is σ = 351258598080. Its totient is φ = 175629298992.

The previous prime is 256126061029. The next prime is 256126061101. The reversal of 256126061065 is 560160621652.

It is an interprime number because it is at equal distance from previous prime (256126061029) and next prime (256126061101).

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

It is not a de Polignac number, because 256126061065 - 2¹¹ = 256126059017 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3658943695 + ... + 3658943764.

It is an arithmetic number, because the mean of its divisors is an integer number (43907324760).

Almost surely, 2^256126061065 is an apocalyptic number.

It is an amenable number.

256126061065 is a deficient number, since it is larger than the sum of its proper divisors (95132537015).

256126061065 is an equidigital number, since it uses as much as digits as its factorization.

256126061065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7317887471.

The product of its (nonzero) digits is 129600, while the sum is 40.

The spelling of 256126061065 in words is "two hundred fifty-six billion, one hundred twenty-six million, sixty-one thousand, sixty-five".