15171040487 has 2 divisors, whose sum is σ = 15171040488. Its totient is φ = 15171040486.

The previous prime is 15171040393. The next prime is 15171040531. The reversal of 15171040487 is 78404017151.

15171040487 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 is a cyclic number.

It is not a de Polignac number, because 15171040487 - 2²⁰ = 15169991911 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15171040487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15171040187) 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, 7585520243 + 7585520244.

It is an arithmetic number, because the mean of its divisors is an integer number (7585520244).

Almost surely, 2^15171040487 is an apocalyptic number.

15171040487 is a deficient number, since it is larger than the sum of its proper divisors (1).

15171040487 is an equidigital number, since it uses as much as digits as its factorization.

15171040487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31360, while the sum is 38.

The spelling of 15171040487 in words is "fifteen billion, one hundred seventy-one million, forty thousand, four hundred eighty-seven".