13012344040 has 16 divisors (see below), whose sum is σ = 29277774180. Its totient is φ = 5204937600.

The previous prime is 13012344019. The next prime is 13012344041. The reversal of 13012344040 is 4044321031.

It can be written as a sum of positive squares in 2 ways, for example, as 11999449764 + 1012894276 = 109542^2 + 31826^2 .

It is not an unprimeable number, because it can be changed into a prime (13012344041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162654261 + ... + 162654340.

Almost surely, 2^13012344040 is an apocalyptic number.

13012344040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13012344040 is an abundant number, since it is smaller than the sum of its proper divisors (16265430140).

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

13012344040 is a wasteful number, since it uses less digits than its factorization.

13012344040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325308612 (or 325308608 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 13012344040 its reverse (4044321031), we get a palindrome (17056665071).

The spelling of 13012344040 in words is "thirteen billion, twelve million, three hundred forty-four thousand, forty".