15941122609 has 2 divisors, whose sum is σ = 15941122610. Its totient is φ = 15941122608.

The previous prime is 15941122543. The next prime is 15941122633. The reversal of 15941122609 is 90622114951.

15941122609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14090402209 + 1850720400 = 118703^2 + 43020^2 .

It is an emirp because it is prime and its reverse (90622114951) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15941122609 - 2⁷ = 15941122481 is a prime.

It is not a weakly prime, because it can be changed into another prime (15941122679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7970561304 + 7970561305.

It is an arithmetic number, because the mean of its divisors is an integer number (7970561305).

Almost surely, 2^15941122609 is an apocalyptic number.

It is an amenable number.

15941122609 is a deficient number, since it is larger than the sum of its proper divisors (1).

15941122609 is an equidigital number, since it uses as much as digits as its factorization.

15941122609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 40.

The spelling of 15941122609 in words is "fifteen billion, nine hundred forty-one million, one hundred twenty-two thousand, six hundred nine".