10640434349 has 8 divisors (see below), whose sum is σ = 10927155960. Its totient is φ = 10355008000.

The previous prime is 10640434333. The next prime is 10640434361. The reversal of 10640434349 is 94343404601.

It can be written as a sum of positive squares in 4 ways, for example, as 2928433225 + 7712001124 = 54115^2 + 87818^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10640434349 - 2⁴ = 10640434333 is a prime.

It is a super-2 number, since 2×10640434349² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10640434309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 307154 + ... + 340035.

It is an arithmetic number, because the mean of its divisors is an integer number (1365894495).

Almost surely, 2^10640434349 is an apocalyptic number.

It is an amenable number.

10640434349 is a deficient number, since it is larger than the sum of its proper divisors (286721611).

10640434349 is an equidigital number, since it uses as much as digits as its factorization.

10640434349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647631.

The product of its (nonzero) digits is 124416, while the sum is 38.

The spelling of 10640434349 in words is "ten billion, six hundred forty million, four hundred thirty-four thousand, three hundred forty-nine".