251000412443489 has 2 divisors, whose sum is σ = 251000412443490. Its totient is φ = 251000412443488.

The previous prime is 251000412443447. The next prime is 251000412443509. The reversal of 251000412443489 is 984344214000152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 159784389142225 + 91216023301264 = 12640585^2 + 9550708^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-251000412443489 is a prime.

It is not a weakly prime, because it can be changed into another prime (251000412443089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125500206221744 + 125500206221745.

It is an arithmetic number, because the mean of its divisors is an integer number (125500206221745).

Almost surely, 2^{251000412443489} is an apocalyptic number.

It is an amenable number.

251000412443489 is a deficient number, since it is larger than the sum of its proper divisors (1).

251000412443489 is an equidigital number, since it uses as much as digits as its factorization.

251000412443489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1105920, while the sum is 47.

The spelling of 251000412443489 in words is "two hundred fifty-one trillion, four hundred twelve million, four hundred forty-three thousand, four hundred eighty-nine".