10321312026491 has 2 divisors, whose sum is σ = 10321312026492. Its totient is φ = 10321312026490.

The previous prime is 10321312026379. The next prime is 10321312026541. The reversal of 10321312026491 is 19462021312301.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10321312026491 - 2³⁴ = 10304132157307 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (10321312025491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5160656013245 + 5160656013246.

It is an arithmetic number, because the mean of its divisors is an integer number (5160656013246).

Almost surely, 2^{10321312026491} is an apocalyptic number.

10321312026491 is a deficient number, since it is larger than the sum of its proper divisors (1).

10321312026491 is an equidigital number, since it uses as much as digits as its factorization.

10321312026491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 35.

Adding to 10321312026491 its reverse (19462021312301), we get a palindrome (29783333338792).

The spelling of 10321312026491 in words is "ten trillion, three hundred twenty-one billion, three hundred twelve million, twenty-six thousand, four hundred ninety-one".