15000000013 has 2 divisors, whose sum is σ = 15000000014. Its totient is φ = 15000000012.

The previous prime is 15000000007. The next prime is 15000000047. The reversal of 15000000013 is 31000000051.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10354487049 + 4645512964 = 101757^2 + 68158^2 .

It is a cyclic number.

It is not a de Polignac number, because 15000000013 - 2⁹ = 14999999501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15000000713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7500000006 + 7500000007.

It is an arithmetic number, because the mean of its divisors is an integer number (7500000007).

Almost surely, 2^15000000013 is an apocalyptic number.

It is an amenable number.

15000000013 is a deficient number, since it is larger than the sum of its proper divisors (1).

15000000013 is an equidigital number, since it uses as much as digits as its factorization.

15000000013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15, while the sum is 10.

Adding to 15000000013 its reverse (31000000051), we get a palindrome (46000000064).

The spelling of 15000000013 in words is "fifteen billion, thirteen", and thus it is an aban number and an uban number.