256516607070023 has 4 divisors (see below), whose sum is σ = 270017481126360. Its totient is φ = 243015733013688.

The previous prime is 256516607070011. The next prime is 256516607070103. The reversal of 256516607070023 is 320070706615652.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 256516607070023 - 2²⁰ = 256516606021447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256516607075023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6750437028140 + ... + 6750437028177.

It is an arithmetic number, because the mean of its divisors is an integer number (67504370281590).

Almost surely, 2^{256516607070023} is an apocalyptic number.

256516607070023 is a deficient number, since it is larger than the sum of its proper divisors (13500874056337).

256516607070023 is a wasteful number, since it uses less digits than its factorization.

256516607070023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13500874056336.

The product of its (nonzero) digits is 3175200, while the sum is 50.

The spelling of 256516607070023 in words is "two hundred fifty-six trillion, five hundred sixteen billion, six hundred seven million, seventy thousand, twenty-three".