256623736303133 has 4 divisors (see below), whose sum is σ = 270130248740160. Its totient is φ = 243117223866108.

The previous prime is 256623736303127. The next prime is 256623736303169. The reversal of 256623736303133 is 331303637326652.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 256623736303133 - 2²⁴ = 256623719525917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256623736303433) 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, 6753256218485 + ... + 6753256218522.

It is an arithmetic number, because the mean of its divisors is an integer number (67532562185040).

Almost surely, 2^{256623736303133} is an apocalyptic number.

It is an amenable number.

256623736303133 is a deficient number, since it is larger than the sum of its proper divisors (13506512437027).

256623736303133 is a wasteful number, since it uses less digits than its factorization.

256623736303133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13506512437026.

The product of its (nonzero) digits is 22044960, while the sum is 53.

The spelling of 256623736303133 in words is "two hundred fifty-six trillion, six hundred twenty-three billion, seven hundred thirty-six million, three hundred three thousand, one hundred thirty-three".