13856820626 has 32 divisors (see below), whose sum is σ = 23695497216. Its totient is φ = 6015834000.

The previous prime is 13856820619. The next prime is 13856820661. The reversal of 13856820626 is 62602865831.

It is a super-2 number, since 2×13856820626² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 329831 + ... + 369461.

It is an arithmetic number, because the mean of its divisors is an integer number (740484288).

Almost surely, 2^13856820626 is an apocalyptic number.

13856820626 is a deficient number, since it is larger than the sum of its proper divisors (9838676590).

13856820626 is a wasteful number, since it uses less digits than its factorization.

13856820626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40358.

The product of its (nonzero) digits is 829440, while the sum is 47.

The spelling of 13856820626 in words is "thirteen billion, eight hundred fifty-six million, eight hundred twenty thousand, six hundred twenty-six".