13366334421 has 32 divisors (see below), whose sum is σ = 21745290240. Its totient is φ = 8047134000.

The previous prime is 13366334413. The next prime is 13366334461. The reversal of 13366334421 is 12443366331.

13366334421 is a `hidden beast` number, since 13 + 3 + 6 + 633 + 4 + 4 + 2 + 1 = 666.

13366334421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13366334421 - 2³ = 13366334413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13366334461) 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 31 ways as a sum of consecutive naturals, for example, 104175 + ... + 193868.

It is an arithmetic number, because the mean of its divisors is an integer number (679540320).

Almost surely, 2^13366334421 is an apocalyptic number.

13366334421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13366334421 is a deficient number, since it is larger than the sum of its proper divisors (8378955819).

13366334421 is a wasteful number, since it uses less digits than its factorization.

13366334421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298214 (or 298208 counting only the distinct ones).

The product of its digits is 93312, while the sum is 36.

The spelling of 13366334421 in words is "thirteen billion, three hundred sixty-six million, three hundred thirty-four thousand, four hundred twenty-one".