13440666480 has 80 divisors (see below), whose sum is σ = 44117024544. Its totient is φ = 3373342720.

The previous prime is 13440666467. The next prime is 13440666527. The reversal of 13440666480 is 8466604431.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1643061 + ... + 1651220.

Almost surely, 2^13440666480 is an apocalyptic number.

13440666480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13440666480 is an abundant number, since it is smaller than the sum of its proper divisors (30676358064).

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

13440666480 is a wasteful number, since it uses less digits than its factorization.

13440666480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3294314 (or 3294308 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 42.

It can be divided in two parts, 1344066 and 6480, that added together give a triangular number (1350546 = T₁₆₄₃).

The spelling of 13440666480 in words is "thirteen billion, four hundred forty million, six hundred sixty-six thousand, four hundred eighty".