13130365840 has 40 divisors (see below), whose sum is σ = 30824509248. Its totient is φ = 5201151360.

The previous prime is 13130365819. The next prime is 13130365867. The reversal of 13130365840 is 4856303131.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 13130365796 and 13130365805.

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, 788506 + ... + 804985.

Almost surely, 2^13130365840 is an apocalyptic number.

13130365840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13130365840 is an abundant number, since it is smaller than the sum of its proper divisors (17694143408).

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

13130365840 is a wasteful number, since it uses less digits than its factorization.

13130365840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1593607 (or 1593601 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

Adding to 13130365840 its reverse (4856303131), we get a palindrome (17986668971).

The spelling of 13130365840 in words is "thirteen billion, one hundred thirty million, three hundred sixty-five thousand, eight hundred forty".