10640645221337 has 2 divisors, whose sum is σ = 10640645221338. Its totient is φ = 10640645221336.

The previous prime is 10640645221309. The next prime is 10640645221369. The reversal of 10640645221337 is 73312254604601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10634147088016 + 6498133321 = 3261004^2 + 80611^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10640645221337 is a prime.

It is a super-2 number, since 2×10640645221337² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10640645221237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5320322610668 + 5320322610669.

It is an arithmetic number, because the mean of its divisors is an integer number (5320322610669).

Almost surely, 2^{10640645221337} is an apocalyptic number.

It is an amenable number.

10640645221337 is a deficient number, since it is larger than the sum of its proper divisors (1).

10640645221337 is an equidigital number, since it uses as much as digits as its factorization.

10640645221337 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 725760, while the sum is 44.

Adding to 10640645221337 its reverse (73312254604601), we get a palindrome (83952899825938).

The spelling of 10640645221337 in words is "ten trillion, six hundred forty billion, six hundred forty-five million, two hundred twenty-one thousand, three hundred thirty-seven".