15000000027 has 16 divisors (see below), whose sum is σ = 20191628160. Its totient is φ = 9904481600.

The previous prime is 15000000013. The next prime is 15000000047. The reversal of 15000000027 is 72000000051.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15000000027 is a prime.

15000000027 is a modest number, since divided by 27 gives 15 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 14999999952 and 15000000015.

It is not an unprimeable number, because it can be changed into a prime (15000000007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 168124 + ... + 241382.

It is an arithmetic number, because the mean of its divisors is an integer number (1261976760).

Almost surely, 2^15000000027 is an apocalyptic number.

15000000027 is a deficient number, since it is larger than the sum of its proper divisors (5191628133).

15000000027 is a wasteful number, since it uses less digits than its factorization.

15000000027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73914.

The product of its (nonzero) digits is 70, while the sum is 15.

Adding to 15000000027 its reverse (72000000051), we get a palindrome (87000000078).

The spelling of 15000000027 in words is "fifteen billion, twenty-seven", and thus it is an aban number and an uban number.