255443145157 has 2 divisors, whose sum is σ = 255443145158. Its totient is φ = 255443145156.

The previous prime is 255443145127. The next prime is 255443145179. The reversal of 255443145157 is 751541344552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 226622650401 + 28820494756 = 476049^2 + 169766^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255443145157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255443145127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127721572578 + 127721572579.

It is an arithmetic number, because the mean of its divisors is an integer number (127721572579).

Almost surely, 2^255443145157 is an apocalyptic number.

It is an amenable number.

255443145157 is a deficient number, since it is larger than the sum of its proper divisors (1).

255443145157 is an equidigital number, since it uses as much as digits as its factorization.

255443145157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1680000, while the sum is 46.

The spelling of 255443145157 in words is "two hundred fifty-five billion, four hundred forty-three million, one hundred forty-five thousand, one hundred fifty-seven".