13621144523 has 8 divisors (see below), whose sum is σ = 15580819680. Its totient is φ = 11664918720.

The previous prime is 13621144519. The next prime is 13621144541. The reversal of 13621144523 is 32544112631.

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

It is not a de Polignac number, because 13621144523 - 2² = 13621144519 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13621144523.

It is not an unprimeable number, because it can be changed into a prime (13621144513) 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, 853868 + ... + 869673.

It is an arithmetic number, because the mean of its divisors is an integer number (1947602460).

Almost surely, 2^13621144523 is an apocalyptic number.

13621144523 is a deficient number, since it is larger than the sum of its proper divisors (1959675157).

13621144523 is a wasteful number, since it uses less digits than its factorization.

13621144523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1724677.

The product of its digits is 17280, while the sum is 32.

The spelling of 13621144523 in words is "thirteen billion, six hundred twenty-one million, one hundred forty-four thousand, five hundred twenty-three".