13011452440 has 32 divisors (see below), whose sum is σ = 33458021280. Its totient is φ = 4461069312.

The previous prime is 13011452393. The next prime is 13011452471. The reversal of 13011452440 is 4425411031.

It is a congruent number.

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, 23234457 + ... + 23235016.

It is an arithmetic number, because the mean of its divisors is an integer number (1045563165).

Almost surely, 2^13011452440 is an apocalyptic number.

13011452440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13011452440 is an abundant number, since it is smaller than the sum of its proper divisors (20446568840).

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

13011452440 is a wasteful number, since it uses less digits than its factorization.

13011452440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46469491 (or 46469487 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 13011452440 its reverse (4425411031), we get a palindrome (17436863471).

The spelling of 13011452440 in words is "thirteen billion, eleven million, four hundred fifty-two thousand, four hundred forty".