13105404036 has 36 divisors (see below), whose sum is σ = 34269881100. Its totient is φ = 4217830848.

The previous prime is 13105404031. The next prime is 13105404043. The reversal of 13105404036 is 63040450131.

It can be written as a sum of positive squares in 2 ways, for example, as 5535360000 + 7570044036 = 74400^2 + 87006^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×13105404036² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13105404031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6275491 + ... + 6277578.

Almost surely, 2^13105404036 is an apocalyptic number.

It is an amenable number.

13105404036 is an abundant number, since it is smaller than the sum of its proper divisors (21164477064).

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

13105404036 is a wasteful number, since it uses less digits than its factorization.

13105404036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12553108 (or 12553103 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 13105404036 its reverse (63040450131), we get a palindrome (76145854167).

The spelling of 13105404036 in words is "thirteen billion, one hundred five million, four hundred four thousand, thirty-six".