13844781478 has 16 divisors (see below), whose sum is σ = 22659683904. Its totient is φ = 6291808360.

The previous prime is 13844781421. The next prime is 13844781523. The reversal of 13844781478 is 87418744831.

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, 52101 + ... + 174367.

It is an arithmetic number, because the mean of its divisors is an integer number (1416230244).

Almost surely, 2^13844781478 is an apocalyptic number.

13844781478 is a deficient number, since it is larger than the sum of its proper divisors (8814902426).

13844781478 is a wasteful number, since it uses less digits than its factorization.

13844781478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127427.

The product of its digits is 4816896, while the sum is 55.

The spelling of 13844781478 in words is "thirteen billion, eight hundred forty-four million, seven hundred eighty-one thousand, four hundred seventy-eight".