13621512459 has 8 divisors (see below), whose sum is σ = 18207310032. Its totient is φ = 9058361600.

The previous prime is 13621512439. The next prime is 13621512493. The reversal of 13621512459 is 95421512631.

It is a happy number.

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 13621512459 - 2⁹ = 13621511947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13621512409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5660274 + ... + 5662679.

It is an arithmetic number, because the mean of its divisors is an integer number (2275913754).

Almost surely, 2^13621512459 is an apocalyptic number.

13621512459 is a deficient number, since it is larger than the sum of its proper divisors (4585797573).

13621512459 is a wasteful number, since it uses less digits than its factorization.

13621512459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11323357.

The product of its digits is 64800, while the sum is 39.

The spelling of 13621512459 in words is "thirteen billion, six hundred twenty-one million, five hundred twelve thousand, four hundred fifty-nine".