13221646476 has 48 divisors (see below), whose sum is σ = 31992693600. Its totient is φ = 4244792832.

The previous prime is 13221646457. The next prime is 13221646507. The reversal of 13221646476 is 67464612231.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95886 + ... + 188778.

It is an arithmetic number, because the mean of its divisors is an integer number (666514450).

Almost surely, 2^13221646476 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13221646476, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15996346800).

13221646476 is an abundant number, since it is smaller than the sum of its proper divisors (18771047124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13221646476 is a wasteful number, since it uses less digits than its factorization.

13221646476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93338 (or 93336 counting only the distinct ones).

The product of its digits is 290304, while the sum is 42.

The spelling of 13221646476 in words is "thirteen billion, two hundred twenty-one million, six hundred forty-six thousand, four hundred seventy-six".