15680412089 has 2 divisors, whose sum is σ = 15680412090. Its totient is φ = 15680412088.

The previous prime is 15680412079. The next prime is 15680412161. The reversal of 15680412089 is 98021408651.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13969348864 + 1711063225 = 118192^2 + 41365^2 .

It is an emirp because it is prime and its reverse (98021408651) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15680412089 is a prime.

It is not a weakly prime, because it can be changed into another prime (15680412079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7840206044 + 7840206045.

It is an arithmetic number, because the mean of its divisors is an integer number (7840206045).

Almost surely, 2^15680412089 is an apocalyptic number.

It is an amenable number.

15680412089 is a deficient number, since it is larger than the sum of its proper divisors (1).

15680412089 is an equidigital number, since it uses as much as digits as its factorization.

15680412089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 44.

The spelling of 15680412089 in words is "fifteen billion, six hundred eighty million, four hundred twelve thousand, eighty-nine".