16586868990 has 64 divisors (see below), whose sum is σ = 41469880320. Its totient is φ = 4241185920.

The previous prime is 16586868967. The next prime is 16586869031. The reversal of 16586868990 is 9986868561.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19557 + ... + 183183.

It is an arithmetic number, because the mean of its divisors is an integer number (647966880).

Almost surely, 2^16586868990 is an apocalyptic number.

16586868990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16586868990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20734940160).

16586868990 is an abundant number, since it is smaller than the sum of its proper divisors (24883011330).

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

16586868990 is a wasteful number, since it uses less digits than its factorization.

16586868990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163777.

The product of its (nonzero) digits is 44789760, while the sum is 66.

The spelling of 16586868990 in words is "sixteen billion, five hundred eighty-six million, eight hundred sixty-eight thousand, nine hundred ninety".