13481994240 has 1152 divisors, whose sum is σ = 58559155200. Its totient is φ = 2919628800.

The previous prime is 13481994167. The next prime is 13481994241. The reversal of 13481994240 is 4249918431.

13481994240 is a `hidden beast` number, since 1 + 3 + 481 + 99 + 42 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (1152).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (13481994241) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 434903025 + ... + 434903055.

It is an arithmetic number, because the mean of its divisors is an integer number (50832600).

Almost surely, 2^13481994240 is an apocalyptic number.

13481994240 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 13481994240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29279577600).

13481994240 is an abundant number, since it is smaller than the sum of its proper divisors (45077160960).

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

13481994240 is a wasteful number, since it uses less digits than its factorization.

13481994240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102 (or 65 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 13481994240 in words is "thirteen billion, four hundred eighty-one million, nine hundred ninety-four thousand, two hundred forty".