13503654421 has 8 divisors (see below), whose sum is σ = 14684419800. Its totient is φ = 12365826048.

The previous prime is 13503654383. The next prime is 13503654431. The reversal of 13503654421 is 12445630531.

It can be written as a sum of positive squares in 4 ways, for example, as 9756500625 + 3747153796 = 98775^2 + 61214^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 13503654421 - 2¹¹ = 13503652373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13503654431) 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, 10733596 + ... + 10734853.

It is an arithmetic number, because the mean of its divisors is an integer number (1835552475).

Almost surely, 2^13503654421 is an apocalyptic number.

It is an amenable number.

13503654421 is a deficient number, since it is larger than the sum of its proper divisors (1180765379).

13503654421 is a wasteful number, since it uses less digits than its factorization.

13503654421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21468503.

The product of its (nonzero) digits is 43200, while the sum is 34.

The spelling of 13503654421 in words is "thirteen billion, five hundred three million, six hundred fifty-four thousand, four hundred twenty-one".