168853478747 has 4 divisors (see below), whose sum is σ = 169153396680. Its totient is φ = 168553560816.

The previous prime is 168853478723. The next prime is 168853478821. The reversal of 168853478747 is 747874358861.

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 168853478747 - 2¹⁸ = 168853216603 is a prime.

It is a super-2 number, since 2×168853478747² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168853471747) 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, 149958122 + ... + 149959247.

It is an arithmetic number, because the mean of its divisors is an integer number (42288349170).

Almost surely, 2^168853478747 is an apocalyptic number.

168853478747 is a deficient number, since it is larger than the sum of its proper divisors (299917933).

168853478747 is an equidigital number, since it uses as much as digits as its factorization.

168853478747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299917932.

The product of its digits is 252887040, while the sum is 68.

The spelling of 168853478747 in words is "one hundred sixty-eight billion, eight hundred fifty-three million, four hundred seventy-eight thousand, seven hundred forty-seven".