13241246666 has 4 divisors (see below), whose sum is σ = 19861870002. Its totient is φ = 6620623332.

The previous prime is 13241246663. The next prime is 13241246701. The reversal of 13241246666 is 66664214231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 10392783025 + 2848463641 = 101945^2 + 53371^2 .

It is a super-2 number, since 2×13241246666² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13241246663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3310311665 + ... + 3310311668.

Almost surely, 2^13241246666 is an apocalyptic number.

13241246666 is a deficient number, since it is larger than the sum of its proper divisors (6620623336).

13241246666 is an equidigital number, since it uses as much as digits as its factorization.

13241246666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6620623335.

The product of its digits is 248832, while the sum is 41.

The spelling of 13241246666 in words is "thirteen billion, two hundred forty-one million, two hundred forty-six thousand, six hundred sixty-six".