15717287145 has 32 divisors (see below), whose sum is σ = 29211344640. Its totient is φ = 7067255040.

The previous prime is 15717287143. The next prime is 15717287161. The reversal of 15717287145 is 54178271751.

15717287145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 15717287145 - 2¹ = 15717287143 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15717287094 and 15717287103.

It is not an unprimeable number, because it can be changed into a prime (15717287143) 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 in 31 ways as a sum of consecutive naturals, for example, 1220550 + ... + 1233359.

It is an arithmetic number, because the mean of its divisors is an integer number (912854520).

Almost surely, 2^15717287145 is an apocalyptic number.

15717287145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15717287145 is a deficient number, since it is larger than the sum of its proper divisors (13494057495).

15717287145 is a wasteful number, since it uses less digits than its factorization.

15717287145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2453985.

The product of its digits is 548800, while the sum is 48.

The spelling of 15717287145 in words is "fifteen billion, seven hundred seventeen million, two hundred eighty-seven thousand, one hundred forty-five".