17091968651 has 4 divisors (see below), whose sum is σ = 17206680000. Its totient is φ = 16977257304.

The previous prime is 17091968533. The next prime is 17091968653. The reversal of 17091968651 is 15686919071.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 17091968651 - 2¹⁸ = 17091706507 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 17091968593 and 17091968602.

It is not an unprimeable number, because it can be changed into a prime (17091968653) 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, 57355451 + ... + 57355748.

It is an arithmetic number, because the mean of its divisors is an integer number (4301670000).

Almost surely, 2^17091968651 is an apocalyptic number.

17091968651 is a deficient number, since it is larger than the sum of its proper divisors (114711349).

17091968651 is a wasteful number, since it uses less digits than its factorization.

17091968651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114711348.

The product of its (nonzero) digits is 816480, while the sum is 53.

The spelling of 17091968651 in words is "seventeen billion, ninety-one million, nine hundred sixty-eight thousand, six hundred fifty-one".