13826621586 has 16 divisors (see below), whose sum is σ = 28241610624. Its totient is φ = 4510812624.

The previous prime is 13826621569. The next prime is 13826621591. The reversal of 13826621586 is 68512662831.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24515005 + ... + 24515568.

It is an arithmetic number, because the mean of its divisors is an integer number (1765100664).

Almost surely, 2^13826621586 is an apocalyptic number.

13826621586 is an abundant number, since it is smaller than the sum of its proper divisors (14414989038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13826621586 is a wasteful number, since it uses less digits than its factorization.

13826621586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49030625.

The product of its digits is 829440, while the sum is 48.

The spelling of 13826621586 in words is "thirteen billion, eight hundred twenty-six million, six hundred twenty-one thousand, five hundred eighty-six".