256316220053723 has 8 divisors (see below), whose sum is σ = 257447562678480. Its totient is φ = 255184896695040.

The previous prime is 256316220053683. The next prime is 256316220053759. The reversal of 256316220053723 is 327350022613652.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-256316220053723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256316120053723) 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, 22183523 + ... + 31697651.

It is an arithmetic number, because the mean of its divisors is an integer number (32180945334810).

Almost surely, 2^{256316220053723} is an apocalyptic number.

256316220053723 is a deficient number, since it is larger than the sum of its proper divisors (1131342624757).

256316220053723 is a wasteful number, since it uses less digits than its factorization.

256316220053723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9633037.

The product of its (nonzero) digits is 2721600, while the sum is 47.

The spelling of 256316220053723 in words is "two hundred fifty-six trillion, three hundred sixteen billion, two hundred twenty million, fifty-three thousand, seven hundred twenty-three".