10200502409 has 2 divisors, whose sum is σ = 10200502410. Its totient is φ = 10200502408.

The previous prime is 10200502399. The next prime is 10200502423. The reversal of 10200502409 is 90420500201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9374112400 + 826390009 = 96820^2 + 28747^2 .

It is a cyclic number.

It is not a de Polignac number, because 10200502409 - 2²⁰ = 10199453833 is a prime.

It is not a weakly prime, because it can be changed into another prime (10200502439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5100251204 + 5100251205.

It is an arithmetic number, because the mean of its divisors is an integer number (5100251205).

Almost surely, 2^10200502409 is an apocalyptic number.

It is an amenable number.

10200502409 is a deficient number, since it is larger than the sum of its proper divisors (1).

10200502409 is an equidigital number, since it uses as much as digits as its factorization.

10200502409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 23.

The spelling of 10200502409 in words is "ten billion, two hundred million, five hundred two thousand, four hundred nine".