13129988443 has 32 divisors (see below), whose sum is σ = 15983412480. Its totient is φ = 10626695040.

The previous prime is 13129988423. The next prime is 13129988453. The reversal of 13129988443 is 34488992131.

It is not a de Polignac number, because 13129988443 - 2²¹ = 13127891291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13129988423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 432480 + ... + 461842.

It is an arithmetic number, because the mean of its divisors is an integer number (499481640).

Almost surely, 2^13129988443 is an apocalyptic number.

13129988443 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13129988443 is a deficient number, since it is larger than the sum of its proper divisors (2853424037).

13129988443 is a wasteful number, since it uses less digits than its factorization.

13129988443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29499.

The product of its digits is 1492992, while the sum is 52.

The spelling of 13129988443 in words is "thirteen billion, one hundred twenty-nine million, nine hundred eighty-eight thousand, four hundred forty-three".