10015858109 has 2 divisors, whose sum is σ = 10015858110. Its totient is φ = 10015858108.

The previous prime is 10015858103. The next prime is 10015858247. The reversal of 10015858109 is 90185851001.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6327725209 + 3688132900 = 79547^2 + 60730^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10015858109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10015858103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5007929054 + 5007929055.

It is an arithmetic number, because the mean of its divisors is an integer number (5007929055).

Almost surely, 2^10015858109 is an apocalyptic number.

It is an amenable number.

10015858109 is a deficient number, since it is larger than the sum of its proper divisors (1).

10015858109 is an equidigital number, since it uses as much as digits as its factorization.

10015858109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 38.

The spelling of 10015858109 in words is "ten billion, fifteen million, eight hundred fifty-eight thousand, one hundred nine".