13044000040 has 32 divisors (see below), whose sum is σ = 31075413480. Its totient is φ = 4910682112.

The previous prime is 13044000037. The next prime is 13044000127. The reversal of 13044000040 is 4000044031.

It can be written as a sum of positive squares in 4 ways, for example, as 11723259076 + 1320740964 = 108274^2 + 36342^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13043999978 and 13044000023.

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, 9590497 + ... + 9591856.

Almost surely, 2^13044000040 is an apocalyptic number.

13044000040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13044000040 is an abundant number, since it is smaller than the sum of its proper divisors (18031413440).

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

13044000040 is a wasteful number, since it uses less digits than its factorization.

13044000040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19182381 (or 19182377 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 13044000040 its reverse (4000044031), we get a palindrome (17044044071).

The spelling of 13044000040 in words is "thirteen billion, forty-four million, forty", and thus it is an aban number.