13393528666 has 8 divisors (see below), whose sum is σ = 22960334880. Its totient is φ = 5740083708.

The previous prime is 13393528649. The next prime is 13393528667. The reversal of 13393528666 is 66682539331.

It is a happy number.

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

It is a super-2 number, since 2×13393528666² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13393528667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 478340296 + ... + 478340323.

It is an arithmetic number, because the mean of its divisors is an integer number (2870041860).

Almost surely, 2^13393528666 is an apocalyptic number.

13393528666 is a deficient number, since it is larger than the sum of its proper divisors (9566806214).

13393528666 is an equidigital number, since it uses as much as digits as its factorization.

13393528666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 956680628.

The product of its digits is 4199040, while the sum is 52.

The spelling of 13393528666 in words is "thirteen billion, three hundred ninety-three million, five hundred twenty-eight thousand, six hundred sixty-six".