13043666532 has 24 divisors (see below), whose sum is σ = 32776393216. Its totient is φ = 4013435808.

The previous prime is 13043666477. The next prime is 13043666561. The reversal of 13043666532 is 23566634031.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41806468 + ... + 41806779.

Almost surely, 2^13043666532 is an apocalyptic number.

13043666532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13043666532 is an abundant number, since it is smaller than the sum of its proper divisors (19732726684).

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

13043666532 is a wasteful number, since it uses less digits than its factorization.

13043666532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83613267 (or 83613265 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 39.

The spelling of 13043666532 in words is "thirteen billion, forty-three million, six hundred sixty-six thousand, five hundred thirty-two".