16868439000 has 512 divisors, whose sum is σ = 67392000000. Its totient is φ = 3823372800.

The previous prime is 16868438999. The next prime is 16868439017. The reversal of 16868439000 is 93486861.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 28160701 + ... + 28161299.

It is an arithmetic number, because the mean of its divisors is an integer number (131625000).

Almost surely, 2^16868439000 is an apocalyptic number.

16868439000 is a gapful number since it is divisible by the number (10) 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 16868439000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33696000000).

16868439000 is an abundant number, since it is smaller than the sum of its proper divisors (50523561000).

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

16868439000 is a wasteful number, since it uses less digits than its factorization.

16868439000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785 (or 765 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 16868439000 in words is "sixteen billion, eight hundred sixty-eight million, four hundred thirty-nine thousand".