13033181868 has 24 divisors (see below), whose sum is σ = 34755151872. Its totient is φ = 3723766224.

The previous prime is 13033181867. The next prime is 13033181881. The reversal of 13033181868 is 86818133031.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (13033181867) 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, 77578380 + ... + 77578547.

It is an arithmetic number, because the mean of its divisors is an integer number (1448131328).

Almost surely, 2^13033181868 is an apocalyptic number.

It is an amenable number.

13033181868 is an abundant number, since it is smaller than the sum of its proper divisors (21721970004).

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

13033181868 is a wasteful number, since it uses less digits than its factorization.

13033181868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155156941 (or 155156939 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The spelling of 13033181868 in words is "thirteen billion, thirty-three million, one hundred eighty-one thousand, eight hundred sixty-eight".