13446181856 has 48 divisors (see below), whose sum is σ = 26874565200. Its totient is φ = 6621170688.

The previous prime is 13446181849. The next prime is 13446181883. The reversal of 13446181856 is 65818164431.

It is a super-3 number, since 3×13446181856³ (a number of 31 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13446181856.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1722410 + ... + 1730198.

It is an arithmetic number, because the mean of its divisors is an integer number (559886775).

Almost surely, 2^13446181856 is an apocalyptic number.

13446181856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13446181856 is a deficient number, since it is larger than the sum of its proper divisors (13428383344).

13446181856 is an equidigital number, since it uses as much as digits as its factorization.

13446181856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8611 (or 8603 counting only the distinct ones).

The product of its digits is 552960, while the sum is 47.

The spelling of 13446181856 in words is "thirteen billion, four hundred forty-six million, one hundred eighty-one thousand, eight hundred fifty-six".