15745546109 has 2 divisors, whose sum is σ = 15745546110. Its totient is φ = 15745546108.

The previous prime is 15745546073. The next prime is 15745546123. The reversal of 15745546109 is 90164554751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13787926084 + 1957620025 = 117422^2 + 44245^2 .

It is a cyclic number.

It is not a de Polignac number, because 15745546109 - 2²⁴ = 15728768893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15745546189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7872773054 + 7872773055.

It is an arithmetic number, because the mean of its divisors is an integer number (7872773055).

Almost surely, 2^15745546109 is an apocalyptic number.

It is an amenable number.

15745546109 is a deficient number, since it is larger than the sum of its proper divisors (1).

15745546109 is an equidigital number, since it uses as much as digits as its factorization.

15745546109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756000, while the sum is 47.

The spelling of 15745546109 in words is "fifteen billion, seven hundred forty-five million, five hundred forty-six thousand, one hundred nine".