13038709820 has 24 divisors (see below), whose sum is σ = 27409357584. Its totient is φ = 5210137856.

The previous prime is 13038709781. The next prime is 13038709823. The reversal of 13038709820 is 2890783031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13038709823) 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, 314102 + ... + 353181.

It is an arithmetic number, because the mean of its divisors is an integer number (1142056566).

Almost surely, 2^13038709820 is an apocalyptic number.

13038709820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13038709820 is an abundant number, since it is smaller than the sum of its proper divisors (14370647764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13038709820 is a wasteful number, since it uses less digits than its factorization.

13038709820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668269 (or 668267 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 41.

The spelling of 13038709820 in words is "thirteen billion, thirty-eight million, seven hundred nine thousand, eight hundred twenty".