13449181660 has 24 divisors (see below), whose sum is σ = 28247150736. Its totient is φ = 5378935680.

The previous prime is 13449181649. The next prime is 13449181663. The reversal of 13449181660 is 6618194431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13449181663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117795 + ... + 201925.

It is an arithmetic number, because the mean of its divisors is an integer number (1176964614).

Almost surely, 2^13449181660 is an apocalyptic number.

13449181660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13449181660 is an abundant number, since it is smaller than the sum of its proper divisors (14797969076).

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

13449181660 is a wasteful number, since it uses less digits than its factorization.

13449181660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92133 (or 92131 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 43.

The spelling of 13449181660 in words is "thirteen billion, four hundred forty-nine million, one hundred eighty-one thousand, six hundred sixty".