16870353668517 has 4 divisors (see below), whose sum is σ = 22493804891360. Its totient is φ = 11246902445676.

The previous prime is 16870353668419. The next prime is 16870353668533. The reversal of 16870353668517 is 71586635307861.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 16870353668517 - 2¹⁰ = 16870353667493 is a prime.

It is a super-3 number, since 3×16870353668517³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16870353669517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2811725611417 + ... + 2811725611422.

It is an arithmetic number, because the mean of its divisors is an integer number (5623451222840).

Almost surely, 2^{16870353668517} is an apocalyptic number.

It is an amenable number.

16870353668517 is a deficient number, since it is larger than the sum of its proper divisors (5623451222843).

16870353668517 is an equidigital number, since it uses as much as digits as its factorization.

16870353668517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5623451222842.

The product of its (nonzero) digits is 152409600, while the sum is 66.

The spelling of 16870353668517 in words is "sixteen trillion, eight hundred seventy billion, three hundred fifty-three million, six hundred sixty-eight thousand, five hundred seventeen".