13204432646 has 8 divisors (see below), whose sum is σ = 20341963920. Its totient is φ = 6423778008.

The previous prime is 13204432601. The next prime is 13204432651. The reversal of 13204432646 is 64623440231.

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

It is a super-2 number, since 2×13204432646² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89219066 + ... + 89219213.

It is an arithmetic number, because the mean of its divisors is an integer number (2542745490).

Almost surely, 2^13204432646 is an apocalyptic number.

13204432646 is a deficient number, since it is larger than the sum of its proper divisors (7137531274).

13204432646 is a wasteful number, since it uses less digits than its factorization.

13204432646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178438318.

The product of its (nonzero) digits is 82944, while the sum is 35.

Adding to 13204432646 its reverse (64623440231), we get a palindrome (77827872877).

The spelling of 13204432646 in words is "thirteen billion, two hundred four million, four hundred thirty-two thousand, six hundred forty-six".