256065140015 has 32 divisors (see below), whose sum is σ = 328062265344. Its totient is φ = 191198085120.

The previous prime is 256065139997. The next prime is 256065140029. The reversal of 256065140015 is 510041560652.

It is not a de Polignac number, because 256065140015 - 2²⁶ = 255998031151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34335167 + ... + 34342623.

It is an arithmetic number, because the mean of its divisors is an integer number (10251945792).

Almost surely, 2^256065140015 is an apocalyptic number.

256065140015 is a deficient number, since it is larger than the sum of its proper divisors (71997125329).

256065140015 is a wasteful number, since it uses less digits than its factorization.

256065140015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10787.

The product of its (nonzero) digits is 36000, while the sum is 35.

The spelling of 256065140015 in words is "two hundred fifty-six billion, sixty-five million, one hundred forty thousand, fifteen".