13331666880 has 280 divisors, whose sum is σ = 54198548448. Its totient is φ = 3047196672.

The previous prime is 13331666857. The next prime is 13331666891. The reversal of 13331666880 is 8866613331.

It is a tau number, because it is divible by the number of its divisors (280).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

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 39 ways as a sum of consecutive naturals, for example, 144702 + ... + 218178.

Almost surely, 2^13331666880 is an apocalyptic number.

13331666880 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 13331666880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27099274224).

13331666880 is an abundant number, since it is smaller than the sum of its proper divisors (40866881568).

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

13331666880 is an equidigital number, since it uses as much as digits as its factorization.

13331666880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73513 (or 73494 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 13331666880 in words is "thirteen billion, three hundred thirty-one million, six hundred sixty-six thousand, eight hundred eighty".