13012454440 has 16 divisors (see below), whose sum is σ = 29278022580. Its totient is φ = 5204981760.

The previous prime is 13012454341. The next prime is 13012454443. The reversal of 13012454440 is 4445421031.

It can be written as a sum of positive squares in 2 ways, for example, as 12906323236 + 106131204 = 113606^2 + 10302^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13012454399 and 13012454408.

It is not an unprimeable number, because it can be changed into a prime (13012454443) 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, 162655641 + ... + 162655720.

Almost surely, 2^13012454440 is an apocalyptic number.

13012454440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13012454440 is an abundant number, since it is smaller than the sum of its proper divisors (16265568140).

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

13012454440 is a wasteful number, since it uses less digits than its factorization.

13012454440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325311372 (or 325311368 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 13012454440 its reverse (4445421031), we get a palindrome (17457875471).

The spelling of 13012454440 in words is "thirteen billion, twelve million, four hundred fifty-four thousand, four hundred forty".