168690763218 has 16 divisors (see below), whose sum is σ = 355138449120. Its totient is φ = 53270767296.

The previous prime is 168690763187. The next prime is 168690763271. The reversal of 168690763218 is 812367096861.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 739871655 + ... + 739871882.

It is an arithmetic number, because the mean of its divisors is an integer number (22196153070).

Almost surely, 2^168690763218 is an apocalyptic number.

168690763218 is an abundant number, since it is smaller than the sum of its proper divisors (186447685902).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

168690763218 is a wasteful number, since it uses less digits than its factorization.

168690763218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1479743561.

The product of its (nonzero) digits is 5225472, while the sum is 57.

The spelling of 168690763218 in words is "one hundred sixty-eight billion, six hundred ninety million, seven hundred sixty-three thousand, two hundred eighteen".