13149133665 has 8 divisors (see below), whose sum is σ = 21038613888. Its totient is φ = 7012871280.

The previous prime is 13149133661. The next prime is 13149133703. The reversal of 13149133665 is 56633194131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13149133665 - 2² = 13149133661 is a prime.

It is a super-2 number, since 2×13149133665² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13149133661) 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, 438304441 + ... + 438304470.

It is an arithmetic number, because the mean of its divisors is an integer number (2629826736).

Almost surely, 2^13149133665 is an apocalyptic number.

13149133665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13149133665 is a deficient number, since it is larger than the sum of its proper divisors (7889480223).

13149133665 is an equidigital number, since it uses as much as digits as its factorization.

13149133665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876608919.

The product of its digits is 174960, while the sum is 42.

The spelling of 13149133665 in words is "thirteen billion, one hundred forty-nine million, one hundred thirty-three thousand, six hundred sixty-five".