4145872227257 has 2 divisors, whose sum is σ = 4145872227258. Its totient is φ = 4145872227256.

The previous prime is 4145872227247. The next prime is 4145872227307. The reversal of 4145872227257 is 7527222785414.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3023213310121 + 1122658917136 = 1738739^2 + 1059556^2 .

It is a cyclic number.

It is not a de Polignac number, because 4145872227257 - 2²⁶ = 4145805118393 is a prime.

It is not a weakly prime, because it can be changed into another prime (4145872227247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2072936113628 + 2072936113629.

It is an arithmetic number, because the mean of its divisors is an integer number (2072936113629).

Almost surely, 2^{4145872227257} is an apocalyptic number.

It is an amenable number.

4145872227257 is a deficient number, since it is larger than the sum of its proper divisors (1).

4145872227257 is an equidigital number, since it uses as much as digits as its factorization.

4145872227257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17561600, while the sum is 56.

The spelling of 4145872227257 in words is "four trillion, one hundred forty-five billion, eight hundred seventy-two million, two hundred twenty-seven thousand, two hundred fifty-seven".