17397872863 has 8 divisors (see below), whose sum is σ = 19909555232. Its totient is φ = 14892758496.

The previous prime is 17397872857. The next prime is 17397872887. The reversal of 17397872863 is 36827879371.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 17397872863 - 2⁵ = 17397872831 is a prime.

It is a super-2 number, since 2×17397872863² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17397870863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1636320 + ... + 1646917.

It is an arithmetic number, because the mean of its divisors is an integer number (2488694404).

Almost surely, 2^17397872863 is an apocalyptic number.

17397872863 is a deficient number, since it is larger than the sum of its proper divisors (2511682369).

17397872863 is an equidigital number, since it uses as much as digits as its factorization.

17397872863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3284001.

The product of its digits is 21337344, while the sum is 61.

The spelling of 17397872863 in words is "seventeen billion, three hundred ninety-seven million, eight hundred seventy-two thousand, eight hundred sixty-three".