10340521993 has 2 divisors, whose sum is σ = 10340521994. Its totient is φ = 10340521992.

The previous prime is 10340521927. The next prime is 10340522009. The reversal of 10340521993 is 39912504301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8112965184 + 2227556809 = 90072^2 + 47197^2 .

It is an emirp because it is prime and its reverse (39912504301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10340521993 - 2²¹ = 10338424841 is a prime.

It is not a weakly prime, because it can be changed into another prime (10340521193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5170260996 + 5170260997.

It is an arithmetic number, because the mean of its divisors is an integer number (5170260997).

Almost surely, 2^10340521993 is an apocalyptic number.

It is an amenable number.

10340521993 is a deficient number, since it is larger than the sum of its proper divisors (1).

10340521993 is an equidigital number, since it uses as much as digits as its factorization.

10340521993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29160, while the sum is 37.

The spelling of 10340521993 in words is "ten billion, three hundred forty million, five hundred twenty-one thousand, nine hundred ninety-three".