13444666890 has 64 divisors (see below), whose sum is σ = 33304158720. Its totient is φ = 3471842880.

The previous prime is 13444666883. The next prime is 13444666919. The reversal of 13444666890 is 9866644431.

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, 61905 + ... + 175275.

It is an arithmetic number, because the mean of its divisors is an integer number (520377480).

Almost surely, 2^13444666890 is an apocalyptic number.

13444666890 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 13444666890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16652079360).

13444666890 is an abundant number, since it is smaller than the sum of its proper divisors (19859491830).

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

13444666890 is a wasteful number, since it uses less digits than its factorization.

13444666890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113507.

The product of its (nonzero) digits is 2985984, while the sum is 51.

The spelling of 13444666890 in words is "thirteen billion, four hundred forty-four million, six hundred sixty-six thousand, eight hundred ninety".