13506664435420 has 24 divisors (see below), whose sum is σ = 30545841108384. Its totient is φ = 4987076099136.

The previous prime is 13506664435349. The next prime is 13506664435421. The reversal of 13506664435420 is 2453446660531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13506664435421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25974354424 + ... + 25974354943.

It is an arithmetic number, because the mean of its divisors is an integer number (1272743379516).

Almost surely, 2^{13506664435420} is an apocalyptic number.

13506664435420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13506664435420 is an abundant number, since it is smaller than the sum of its proper divisors (17039176672964).

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

13506664435420 is a wasteful number, since it uses less digits than its factorization.

13506664435420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51948709389 (or 51948709387 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 49.

The spelling of 13506664435420 in words is "thirteen trillion, five hundred six billion, six hundred sixty-four million, four hundred thirty-five thousand, four hundred twenty".