256515753076423 has 8 divisors (see below), whose sum is σ = 257656121774208. Its totient is φ = 255375475110264.

The previous prime is 256515753076333. The next prime is 256515753076487. The reversal of 256515753076423 is 324670357515652.

It is a happy number.

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 256515753076423 - 2¹³ = 256515753068231 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 (256515753073423) 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, 17012811 + ... + 28327852.

It is an arithmetic number, because the mean of its divisors is an integer number (32207015221776).

Almost surely, 2^{256515753076423} is an apocalyptic number.

256515753076423 is a deficient number, since it is larger than the sum of its proper divisors (1140368697785).

256515753076423 is a wasteful number, since it uses less digits than its factorization.

256515753076423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45365813.

The product of its (nonzero) digits is 158760000, while the sum is 61.

The spelling of 256515753076423 in words is "two hundred fifty-six trillion, five hundred fifteen billion, seven hundred fifty-three million, seventy-six thousand, four hundred twenty-three".