15675540917 has 2 divisors, whose sum is σ = 15675540918. Its totient is φ = 15675540916.

The previous prime is 15675540799. The next prime is 15675540943. The reversal of 15675540917 is 71904557651.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11380835761 + 4294705156 = 106681^2 + 65534^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15675540917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15675540997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7837770458 + 7837770459.

It is an arithmetic number, because the mean of its divisors is an integer number (7837770459).

Almost surely, 2^15675540917 is an apocalyptic number.

It is an amenable number.

15675540917 is a deficient number, since it is larger than the sum of its proper divisors (1).

15675540917 is an equidigital number, since it uses as much as digits as its factorization.

15675540917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1323000, while the sum is 50.

The spelling of 15675540917 in words is "fifteen billion, six hundred seventy-five million, five hundred forty thousand, nine hundred seventeen".