256723771250353 has 8 divisors (see below), whose sum is σ = 282679700545440. Its totient is φ = 231204076061280.

The previous prime is 256723771250299. The next prime is 256723771250357. The reversal of 256723771250353 is 353052177327652.

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-256723771250353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (256723771250357) 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, 109058525268 + ... + 109058527621.

It is an arithmetic number, because the mean of its divisors is an integer number (35334962568180).

Almost surely, 2^{256723771250353} is an apocalyptic number.

It is an amenable number.

256723771250353 is a deficient number, since it is larger than the sum of its proper divisors (25955929295087).

256723771250353 is a wasteful number, since it uses less digits than its factorization.

256723771250353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218117053007.

The product of its (nonzero) digits is 55566000, while the sum is 58.

The spelling of 256723771250353 in words is "two hundred fifty-six trillion, seven hundred twenty-three billion, seven hundred seventy-one million, two hundred fifty thousand, three hundred fifty-three".