256516007263 has 8 divisors (see below), whose sum is σ = 273893735808. Its totient is φ = 239657016984.

The previous prime is 256516007243. The next prime is 256516007299. The reversal of 256516007263 is 362700615652.

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 256516007263 - 2¹³ = 256515999071 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256516007243) 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, 129683545 + ... + 129685522.

It is an arithmetic number, because the mean of its divisors is an integer number (34236716976).

Almost surely, 2^256516007263 is an apocalyptic number.

256516007263 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

256516007263 is a deficient number, since it is larger than the sum of its proper divisors (17377728545).

256516007263 is a wasteful number, since it uses less digits than its factorization.

256516007263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259369133.

The product of its (nonzero) digits is 453600, while the sum is 43.

The spelling of 256516007263 in words is "two hundred fifty-six billion, five hundred sixteen million, seven thousand, two hundred sixty-three".