13446489680 has 160 divisors (see below), whose sum is σ = 34755108864. Its totient is φ = 4805941248.

The previous prime is 13446489671. The next prime is 13446489733. The reversal of 13446489680 is 8698464431.

It is a Cunningham number, because it is equal to 115959²-1.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

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, 8580257 + ... + 8581823.

Almost surely, 2^13446489680 is an apocalyptic number.

13446489680 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 13446489680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17377554432).

13446489680 is an abundant number, since it is smaller than the sum of its proper divisors (21308619184).

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

13446489680 is a wasteful number, since it uses less digits than its factorization.

13446489680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1853 (or 1847 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 53.

The spelling of 13446489680 in words is "thirteen billion, four hundred forty-six million, four hundred eighty-nine thousand, six hundred eighty".