10640438299 has 4 divisors (see below), whose sum is σ = 10643653336. Its totient is φ = 10637223264.

The previous prime is 10640438297. The next prime is 10640438309. The reversal of 10640438299 is 99283404601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99283404601 = 31 ⋅3202690471.

It is a cyclic number.

It is not a de Polignac number, because 10640438299 - 2¹ = 10640438297 is a prime.

It is a super-2 number, since 2×10640438299² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10640438293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1602549 + ... + 1609174.

It is an arithmetic number, because the mean of its divisors is an integer number (2660913334).

Almost surely, 2^10640438299 is an apocalyptic number.

10640438299 is a deficient number, since it is larger than the sum of its proper divisors (3215037).

10640438299 is an equidigital number, since it uses as much as digits as its factorization.

10640438299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3215036.

The product of its (nonzero) digits is 373248, while the sum is 46.

The spelling of 10640438299 in words is "ten billion, six hundred forty million, four hundred thirty-eight thousand, two hundred ninety-nine".