15551344271 has 2 divisors, whose sum is σ = 15551344272. Its totient is φ = 15551344270.

The previous prime is 15551344243. The next prime is 15551344273. The reversal of 15551344271 is 17244315551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15551344271 - 2¹⁴ = 15551327887 is a prime.

It is a Sophie Germain prime.

Together with 15551344273, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15551344273) 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, 7775672135 + 7775672136.

It is an arithmetic number, because the mean of its divisors is an integer number (7775672136).

Almost surely, 2^15551344271 is an apocalyptic number.

15551344271 is a deficient number, since it is larger than the sum of its proper divisors (1).

15551344271 is an equidigital number, since it uses as much as digits as its factorization.

15551344271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84000, while the sum is 38.

The spelling of 15551344271 in words is "fifteen billion, five hundred fifty-one million, three hundred forty-four thousand, two hundred seventy-one".