13451043840 has 704 divisors, whose sum is σ = 49917192192. Its totient is φ = 3067084800.

The previous prime is 13451043821. The next prime is 13451043857. The reversal of 13451043840 is 4834015431.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 253793254 + ... + 253793306.

Almost surely, 2^13451043840 is an apocalyptic number.

13451043840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13451043840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24958596096).

13451043840 is an abundant number, since it is smaller than the sum of its proper divisors (36466148352).

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

13451043840 is a wasteful number, since it uses less digits than its factorization.

13451043840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166 (or 148 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The spelling of 13451043840 in words is "thirteen billion, four hundred fifty-one million, forty-three thousand, eight hundred forty".