10243651814491 has 2 divisors, whose sum is σ = 10243651814492. Its totient is φ = 10243651814490.

The previous prime is 10243651814359. The next prime is 10243651814521. The reversal of 10243651814491 is 19441815634201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10243651814491 - 2¹⁹ = 10243651290203 is a prime.

It is not a weakly prime, because it can be changed into another prime (10243651814791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5121825907245 + 5121825907246.

It is an arithmetic number, because the mean of its divisors is an integer number (5121825907246).

Almost surely, 2^{10243651814491} is an apocalyptic number.

10243651814491 is a deficient number, since it is larger than the sum of its proper divisors (1).

10243651814491 is an equidigital number, since it uses as much as digits as its factorization.

10243651814491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 829440, while the sum is 49.

The spelling of 10243651814491 in words is "ten trillion, two hundred forty-three billion, six hundred fifty-one million, eight hundred fourteen thousand, four hundred ninety-one".