13115410040 has 64 divisors (see below), whose sum is σ = 29771236800. Its totient is φ = 5199787008.

The previous prime is 13115410031. The next prime is 13115410043. The reversal of 13115410040 is 4001451131.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 13115409994 and 13115410021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13115410043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4541477 + ... + 4544363.

It is an arithmetic number, because the mean of its divisors is an integer number (465175575).

Almost surely, 2^13115410040 is an apocalyptic number.

13115410040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13115410040 is an abundant number, since it is smaller than the sum of its proper divisors (16655826760).

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

13115410040 is a wasteful number, since it uses less digits than its factorization.

13115410040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3864 (or 3860 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 13115410040 its reverse (4001451131), we get a palindrome (17116861171).

The spelling of 13115410040 in words is "thirteen billion, one hundred fifteen million, four hundred ten thousand, forty".