16911885540 has 192 divisors, whose sum is σ = 53032008960. Its totient is φ = 3992002560.

The previous prime is 16911885539. The next prime is 16911885563. The reversal of 16911885540 is 4558811961.

It is a super-2 number, since 2×16911885540² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16911885540.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4790496 + ... + 4794024.

It is an arithmetic number, because the mean of its divisors is an integer number (276208380).

Almost surely, 2^16911885540 is an apocalyptic number.

16911885540 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 16911885540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26516004480).

16911885540 is an abundant number, since it is smaller than the sum of its proper divisors (36120123420).

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

16911885540 is a wasteful number, since it uses less digits than its factorization.

16911885540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3742 (or 3740 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 48.

The spelling of 16911885540 in words is "sixteen billion, nine hundred eleven million, eight hundred eighty-five thousand, five hundred forty".