15728571149 has 2 divisors, whose sum is σ = 15728571150. Its totient is φ = 15728571148.

The previous prime is 15728571143. The next prime is 15728571151. The reversal of 15728571149 is 94117582751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13299855625 + 2428715524 = 115325^2 + 49282^2 .

It is an emirp because it is prime and its reverse (94117582751) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15728571149 - 2¹² = 15728567053 is a prime.

Together with 15728571151, 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 = 15728571097 and 15728571106.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15728571143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7864285574 + 7864285575.

It is an arithmetic number, because the mean of its divisors is an integer number (7864285575).

Almost surely, 2^15728571149 is an apocalyptic number.

It is an amenable number.

15728571149 is a deficient number, since it is larger than the sum of its proper divisors (1).

15728571149 is an equidigital number, since it uses as much as digits as its factorization.

15728571149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 705600, while the sum is 50.

The spelling of 15728571149 in words is "fifteen billion, seven hundred twenty-eight million, five hundred seventy-one thousand, one hundred forty-nine".