256510117364073 has 8 divisors (see below), whose sum is σ = 350355282253536. Its totient is φ = 166835848692000.

The previous prime is 256510117363987. The next prime is 256510117364113. The reversal of 256510117364073 is 370463711015652.

256510117364073 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 not a de Polignac number, because 256510117364073 - 2²⁵ = 256510083809641 is a prime.

It is a super-2 number, since 2×256510117364073² (a number of 30 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (256510117164073) 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, 1042724054203 + ... + 1042724054448.

It is an arithmetic number, because the mean of its divisors is an integer number (43794410281692).

Almost surely, 2^{256510117364073} is an apocalyptic number.

It is an amenable number.

256510117364073 is a deficient number, since it is larger than the sum of its proper divisors (93845164889463).

256510117364073 is a wasteful number, since it uses less digits than its factorization.

256510117364073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2085448108695.

The product of its (nonzero) digits is 3175200, while the sum is 51.

The spelling of 256510117364073 in words is "two hundred fifty-six trillion, five hundred ten billion, one hundred seventeen million, three hundred sixty-four thousand, seventy-three".