15045028909 has 2 divisors, whose sum is σ = 15045028910. Its totient is φ = 15045028908.

The previous prime is 15045028907. The next prime is 15045028931. The reversal of 15045028909 is 90982054051.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12628814884 + 2416214025 = 112378^2 + 49155^2 .

It is a cyclic number.

It is not a de Polignac number, because 15045028909 - 2¹ = 15045028907 is a prime.

Together with 15045028907, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15045028907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7522514454 + 7522514455.

It is an arithmetic number, because the mean of its divisors is an integer number (7522514455).

Almost surely, 2^15045028909 is an apocalyptic number.

It is an amenable number.

15045028909 is a deficient number, since it is larger than the sum of its proper divisors (1).

15045028909 is an equidigital number, since it uses as much as digits as its factorization.

15045028909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129600, while the sum is 43.

The spelling of 15045028909 in words is "fifteen billion, forty-five million, twenty-eight thousand, nine hundred nine".