16903099538640 has 960 divisors, whose sum is σ = 67526072340480. Its totient is φ = 3707924152320.

The previous prime is 16903099538623. The next prime is 16903099538651. The reversal of 16903099538640 is 4683599030961.

16903099538640 is a `hidden beast` number, since 1 + 6 + 9 + 0 + 3 + 0 + 99 + 538 + 6 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

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, 20893818556 + ... + 20893819364.

It is an arithmetic number, because the mean of its divisors is an integer number (70339658688).

Almost surely, 2^{16903099538640} is an apocalyptic number.

16903099538640 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 16903099538640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33763036170240).

16903099538640 is an abundant number, since it is smaller than the sum of its proper divisors (50622972801840).

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

16903099538640 is a wasteful number, since it uses less digits than its factorization.

16903099538640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1812 (or 1803 counting only the distinct ones).

The product of its (nonzero) digits is 37791360, while the sum is 63.

The spelling of 16903099538640 in words is "sixteen trillion, nine hundred three billion, ninety-nine million, five hundred thirty-eight thousand, six hundred forty".