15789799847 has 2 divisors, whose sum is σ = 15789799848. Its totient is φ = 15789799846.

The previous prime is 15789799769. The next prime is 15789799849. The reversal of 15789799847 is 74899798751.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15789799847 - 2¹² = 15789795751 is a prime.

Together with 15789799849, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15789799849) 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, 7894899923 + 7894899924.

It is an arithmetic number, because the mean of its divisors is an integer number (7894899924).

Almost surely, 2^15789799847 is an apocalyptic number.

15789799847 is a deficient number, since it is larger than the sum of its proper divisors (1).

15789799847 is an equidigital number, since it uses as much as digits as its factorization.

15789799847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 320060160, while the sum is 74.

The spelling of 15789799847 in words is "fifteen billion, seven hundred eighty-nine million, seven hundred ninety-nine thousand, eight hundred forty-seven".