9964503761393 has 2 divisors, whose sum is σ = 9964503761394. Its totient is φ = 9964503761392.

The previous prime is 9964503761371. The next prime is 9964503761413. The reversal of 9964503761393 is 3931673054699.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8055873094369 + 1908630667024 = 2838287^2 + 1381532^2 .

It is a cyclic number.

It is not a de Polignac number, because 9964503761393 - 2¹⁶ = 9964503695857 is a prime.

It is not a weakly prime, because it can be changed into another prime (9964503761363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4982251880696 + 4982251880697.

It is an arithmetic number, because the mean of its divisors is an integer number (4982251880697).

Almost surely, 2^{9964503761393} is an apocalyptic number.

It is an amenable number.

9964503761393 is a deficient number, since it is larger than the sum of its proper divisors (1).

9964503761393 is an equidigital number, since it uses as much as digits as its factorization.

9964503761393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 99202320, while the sum is 65.

The spelling of 9964503761393 in words is "nine trillion, nine hundred sixty-four billion, five hundred three million, seven hundred sixty-one thousand, three hundred ninety-three".