256510050515165 has 8 divisors (see below), whose sum is σ = 307818628677600. Its totient is φ = 205203661705872.

The previous prime is 256510050515137. The next prime is 256510050515179. The reversal of 256510050515165 is 561515050015652.

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

It is a cyclic number.

It is not a de Polignac number, because 256510050515165 - 2¹⁴ = 256510050498781 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 547080515 + ... + 547549184.

It is an arithmetic number, because the mean of its divisors is an integer number (38477328584700).

Almost surely, 2^{256510050515165} is an apocalyptic number.

It is an amenable number.

256510050515165 is a deficient number, since it is larger than the sum of its proper divisors (51308578162435).

256510050515165 is a wasteful number, since it uses less digits than its factorization.

256510050515165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094676571.

The product of its (nonzero) digits is 1125000, while the sum is 47.

The spelling of 256510050515165 in words is "two hundred fifty-six trillion, five hundred ten billion, fifty million, five hundred fifteen thousand, one hundred sixty-five".