13337587666 has 8 divisors (see below), whose sum is σ = 21545333964. Its totient is φ = 6155809680.

The previous prime is 13337587663. The next prime is 13337587673. The reversal of 13337587666 is 66678573331.

It can be written as a sum of positive squares in 2 ways, for example, as 13254686641 + 82901025 = 115129^2 + 9105^2 .

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

It is not an unprimeable number, because it can be changed into a prime (13337587663) 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, 256492045 + ... + 256492096.

Almost surely, 2^13337587666 is an apocalyptic number.

13337587666 is a deficient number, since it is larger than the sum of its proper divisors (8207746298).

13337587666 is a wasteful number, since it uses less digits than its factorization.

13337587666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512984156.

The product of its digits is 11430720, while the sum is 55.

The spelling of 13337587666 in words is "thirteen billion, three hundred thirty-seven million, five hundred eighty-seven thousand, six hundred sixty-six".