17123013887 has 36 divisors (see below), whose sum is σ = 21328061184. Its totient is φ = 13703316480.

The previous prime is 17123013781. The next prime is 17123013889. The reversal of 17123013887 is 78831032171.

It is not a de Polignac number, because 17123013887 - 2¹⁸ = 17122751743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17123013889) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1793687 + ... + 1803207.

It is an arithmetic number, because the mean of its divisors is an integer number (592446144).

Almost surely, 2^17123013887 is an apocalyptic number.

17123013887 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

17123013887 is a deficient number, since it is larger than the sum of its proper divisors (4205047297).

17123013887 is a wasteful number, since it uses less digits than its factorization.

17123013887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9696 (or 9672 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 41.

The spelling of 17123013887 in words is "seventeen billion, one hundred twenty-three million, thirteen thousand, eight hundred eighty-seven".