13499447040 has 1008 divisors, whose sum is σ = 55012281408. Its totient is φ = 3153199104.

The previous prime is 13499447021. The next prime is 13499447131. The reversal of 13499447040 is 4074499431.

13499447040 is a `hidden beast` number, since 13 + 49 + 94 + 470 + 40 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 364849902 + ... + 364849938.

It is an arithmetic number, because the mean of its divisors is an integer number (54575676).

Almost surely, 2^13499447040 is an apocalyptic number.

13499447040 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 13499447040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27506140704).

13499447040 is an abundant number, since it is smaller than the sum of its proper divisors (41512834368).

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

13499447040 is an equidigital number, since it uses as much as digits as its factorization.

13499447040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116 (or 87 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The spelling of 13499447040 in words is "thirteen billion, four hundred ninety-nine million, four hundred forty-seven thousand, forty".