13579728211438 has 4 divisors (see below), whose sum is σ = 20369592317160. Its totient is φ = 6789864105718.

The previous prime is 13579728211411. The next prime is 13579728211453. The reversal of 13579728211438 is 83411282797531.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3394932052858 + ... + 3394932052861.

It is an arithmetic number, because the mean of its divisors is an integer number (5092398079290).

Almost surely, 2^{13579728211438} is an apocalyptic number.

13579728211438 is a deficient number, since it is larger than the sum of its proper divisors (6789864105722).

13579728211438 is an equidigital number, since it uses as much as digits as its factorization.

13579728211438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6789864105721.

The product of its digits is 20321280, while the sum is 61.

The spelling of 13579728211438 in words is "thirteen trillion, five hundred seventy-nine billion, seven hundred twenty-eight million, two hundred eleven thousand, four hundred thirty-eight".