13621379366 has 12 divisors (see below), whose sum is σ = 23767917228. Its totient is φ = 5837733972.

The previous prime is 13621379363. The next prime is 13621379411. The reversal of 13621379366 is 66397312631.

13621379366 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 13621379366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13621379363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 69496736 + ... + 69496931.

It is an arithmetic number, because the mean of its divisors is an integer number (1980659769).

Almost surely, 2^13621379366 is an apocalyptic number.

13621379366 is a deficient number, since it is larger than the sum of its proper divisors (10146537862).

13621379366 is a wasteful number, since it uses less digits than its factorization.

13621379366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138993683 (or 138993676 counting only the distinct ones).

The product of its digits is 734832, while the sum is 47.

The spelling of 13621379366 in words is "thirteen billion, six hundred twenty-one million, three hundred seventy-nine thousand, three hundred sixty-six".