255728732723 has 2 divisors, whose sum is σ = 255728732724. Its totient is φ = 255728732722.

The previous prime is 255728732717. The next prime is 255728732731. The reversal of 255728732723 is 327237827552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 255728732723 - 2¹² = 255728728627 is a prime.

It is a super-2 number, since 2×255728732723² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (255728731723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127864366361 + 127864366362.

It is an arithmetic number, because the mean of its divisors is an integer number (127864366362).

Almost surely, 2^255728732723 is an apocalyptic number.

255728732723 is a deficient number, since it is larger than the sum of its proper divisors (1).

255728732723 is an equidigital number, since it uses as much as digits as its factorization.

255728732723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9878400, while the sum is 53.

The spelling of 255728732723 in words is "two hundred fifty-five billion, seven hundred twenty-eight million, seven hundred thirty-two thousand, seven hundred twenty-three".