17213868125 has 10 divisors (see below), whose sum is σ = 21510450390. Its totient is φ = 13771094000.

The previous prime is 17213868107. The next prime is 17213868131. The reversal of 17213868125 is 52186831271.

It can be written as a sum of positive squares in 5 ways, for example, as 9338903044 + 7874965081 = 96638^2 + 88741^2 .

It is not a de Polignac number, because 17213868125 - 2¹⁰ = 17213867101 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 13770470 + ... + 13771719.

It is an arithmetic number, because the mean of its divisors is an integer number (2151045039).

Almost surely, 2^17213868125 is an apocalyptic number.

It is an amenable number.

17213868125 is a deficient number, since it is larger than the sum of its proper divisors (4296582265).

17213868125 is an frugal number, since it uses more digits than its factorization.

17213868125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27542209 (or 27542194 counting only the distinct ones).

The product of its digits is 161280, while the sum is 44.

The spelling of 17213868125 in words is "seventeen billion, two hundred thirteen million, eight hundred sixty-eight thousand, one hundred twenty-five".