16403559548040 has 768 divisors, whose sum is σ = 64106556433920. Its totient is φ = 3694976040960.

The previous prime is 16403559548021. The next prime is 16403559548053. The reversal of 16403559548040 is 4084595530461.

16403559548040 is a `hidden beast` number, since 1 + 6 + 4 + 0 + 3 + 5 + 59 + 548 + 0 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1590565924 + ... + 1590576236.

It is an arithmetic number, because the mean of its divisors is an integer number (83472078690).

Almost surely, 2^{16403559548040} is an apocalyptic number.

16403559548040 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 16403559548040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32053278216960).

16403559548040 is an abundant number, since it is smaller than the sum of its proper divisors (47702996885880).

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

16403559548040 is a wasteful number, since it uses less digits than its factorization.

16403559548040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10684 (or 10668 counting only the distinct ones).

The product of its (nonzero) digits is 10368000, while the sum is 54.

The spelling of 16403559548040 in words is "sixteen trillion, four hundred three billion, five hundred fifty-nine million, five hundred forty-eight thousand, forty".