13771444859 has 4 divisors (see below), whose sum is σ = 14107333800. Its totient is φ = 13435555920.

The previous prime is 13771444849. The next prime is 13771444889. The reversal of 13771444859 is 95844417731.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13771444859 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13771444859.

It is not an unprimeable number, because it can be changed into a prime (13771444829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167944409 + ... + 167944490.

It is an arithmetic number, because the mean of its divisors is an integer number (3526833450).

Almost surely, 2^13771444859 is an apocalyptic number.

13771444859 is a deficient number, since it is larger than the sum of its proper divisors (335888941).

13771444859 is an equidigital number, since it uses as much as digits as its factorization.

13771444859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335888940.

The product of its digits is 3386880, while the sum is 53.

The spelling of 13771444859 in words is "thirteen billion, seven hundred seventy-one million, four hundred forty-four thousand, eight hundred fifty-nine".