13043888885 has 8 divisors (see below), whose sum is σ = 15791186520. Its totient is φ = 10342764544.

The previous prime is 13043888881. The next prime is 13043888887. The reversal of 13043888885 is 58888834031.

It can be written as a sum of positive squares in 4 ways, for example, as 256576324 + 12787312561 = 16018^2 + 113081^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13043888885 - 2² = 13043888881 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13043888885.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13043888881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11542700 + ... + 11543829.

It is an arithmetic number, because the mean of its divisors is an integer number (1973898315).

Almost surely, 2^13043888885 is an apocalyptic number.

It is an amenable number.

13043888885 is a deficient number, since it is larger than the sum of its proper divisors (2747297635).

13043888885 is a wasteful number, since it uses less digits than its factorization.

13043888885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23086647.

The product of its (nonzero) digits is 5898240, while the sum is 56.

The spelling of 13043888885 in words is "thirteen billion, forty-three million, eight hundred eighty-eight thousand, eight hundred eighty-five".