13436427621 has 8 divisors (see below), whose sum is σ = 17915782720. Its totient is φ = 8957345472.

The previous prime is 13436427577. The next prime is 13436427671. The reversal of 13436427621 is 12672463431.

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

It is not a de Polignac number, because 13436427621 - 2¹⁴ = 13436411237 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 13436427621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13436427671) 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, 123981 + ... + 205533.

It is an arithmetic number, because the mean of its divisors is an integer number (2239472840).

Almost surely, 2^13436427621 is an apocalyptic number.

It is an amenable number.

13436427621 is a deficient number, since it is larger than the sum of its proper divisors (4479355099).

13436427621 is an equidigital number, since it uses as much as digits as its factorization.

13436427621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136475.

The product of its digits is 145152, while the sum is 39.

The spelling of 13436427621 in words is "thirteen billion, four hundred thirty-six million, four hundred twenty-seven thousand, six hundred twenty-one".