168986986872 has 128 divisors (see below), whose sum is σ = 465469804800. Its totient is φ = 50699494400.

The previous prime is 168986986871. The next prime is 168986986933. The reversal of 168986986872 is 278689689861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168986986871) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14063347 + ... + 14075357.

It is an arithmetic number, because the mean of its divisors is an integer number (3636482850).

Almost surely, 2^168986986872 is an apocalyptic number.

168986986872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 168986986872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232734902400).

168986986872 is an abundant number, since it is smaller than the sum of its proper divisors (296482817928).

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

168986986872 is a wasteful number, since it uses less digits than its factorization.

168986986872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12557 (or 12553 counting only the distinct ones).

The product of its digits is 1003290624, while the sum is 78.

The spelling of 168986986872 in words is "one hundred sixty-eight billion, nine hundred eighty-six million, nine hundred eighty-six thousand, eight hundred seventy-two".