15565627247 has 2 divisors, whose sum is σ = 15565627248. Its totient is φ = 15565627246.

The previous prime is 15565627219. The next prime is 15565627249. The reversal of 15565627247 is 74272656551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15565627247 - 2¹⁸ = 15565365103 is a prime.

Together with 15565627249, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 15565627195 and 15565627204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15565627249) 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, 7782813623 + 7782813624.

It is an arithmetic number, because the mean of its divisors is an integer number (7782813624).

Almost surely, 2^15565627247 is an apocalyptic number.

15565627247 is a deficient number, since it is larger than the sum of its proper divisors (1).

15565627247 is an equidigital number, since it uses as much as digits as its factorization.

15565627247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3528000, while the sum is 50.

The spelling of 15565627247 in words is "fifteen billion, five hundred sixty-five million, six hundred twenty-seven thousand, two hundred forty-seven".