13211661662 has 4 divisors (see below), whose sum is σ = 19817492496. Its totient is φ = 6605830830.

The previous prime is 13211661653. The next prime is 13211661667. The reversal of 13211661662 is 26616611231.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13211661667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3302915414 + ... + 3302915417.

It is an arithmetic number, because the mean of its divisors is an integer number (4954373124).

Almost surely, 2^13211661662 is an apocalyptic number.

13211661662 is a deficient number, since it is larger than the sum of its proper divisors (6605830834).

13211661662 is an equidigital number, since it uses as much as digits as its factorization.

13211661662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6605830833.

The product of its digits is 15552, while the sum is 35.

The spelling of 13211661662 in words is "thirteen billion, two hundred eleven million, six hundred sixty-one thousand, six hundred sixty-two".