10340520409 has 2 divisors, whose sum is σ = 10340520410. Its totient is φ = 10340520408.

The previous prime is 10340520397. The next prime is 10340520473. The reversal of 10340520409 is 90402504301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9370820809 + 969699600 = 96803^2 + 31140^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10340520409 is a prime.

It is a super-3 number, since 3×10340520409³ (a number of 31 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (10340520479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5170260204 + 5170260205.

It is an arithmetic number, because the mean of its divisors is an integer number (5170260205).

Almost surely, 2^10340520409 is an apocalyptic number.

It is an amenable number.

10340520409 is a deficient number, since it is larger than the sum of its proper divisors (1).

10340520409 is an equidigital number, since it uses as much as digits as its factorization.

10340520409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 28.

The spelling of 10340520409 in words is "ten billion, three hundred forty million, five hundred twenty thousand, four hundred nine".