16866093390 has 64 divisors (see below), whose sum is σ = 41592621312. Its totient is φ = 4374720000.

The previous prime is 16866093389. The next prime is 16866093401. The reversal of 16866093390 is 9339066861.

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, 283765 + ... + 338015.

It is an arithmetic number, because the mean of its divisors is an integer number (649884708).

Almost surely, 2^16866093390 is an apocalyptic number.

16866093390 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 16866093390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20796310656).

16866093390 is an abundant number, since it is smaller than the sum of its proper divisors (24726527922).

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

16866093390 is a wasteful number, since it uses less digits than its factorization.

16866093390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54545.

The product of its (nonzero) digits is 1259712, while the sum is 51.

The spelling of 16866093390 in words is "sixteen billion, eight hundred sixty-six million, ninety-three thousand, three hundred ninety".