15609552227 has 2 divisors, whose sum is σ = 15609552228. Its totient is φ = 15609552226.

The previous prime is 15609552187. The next prime is 15609552241. The reversal of 15609552227 is 72225590651.

It is a strong prime.

It is an emirp because it is prime and its reverse (72225590651) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15609552227 - 2¹² = 15609548131 is a prime.

It is not a weakly prime, because it can be changed into another prime (15609252227) 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 as a sum of consecutive naturals, namely, 7804776113 + 7804776114.

It is an arithmetic number, because the mean of its divisors is an integer number (7804776114).

Almost surely, 2^15609552227 is an apocalyptic number.

15609552227 is a deficient number, since it is larger than the sum of its proper divisors (1).

15609552227 is an equidigital number, since it uses as much as digits as its factorization.

15609552227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378000, while the sum is 44.

The spelling of 15609552227 in words is "fifteen billion, six hundred nine million, five hundred fifty-two thousand, two hundred twenty-seven".