16491369960 has 384 divisors, whose sum is σ = 63017136000. Its totient is φ = 3845200896.

The previous prime is 16491369959. The next prime is 16491369967. The reversal of 16491369960 is 6996319461.

16491369960 is a `hidden beast` number, since 1 + 6 + 491 + 3 + 6 + 99 + 60 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 16491369897 and 16491369906.

It is not an unprimeable number, because it can be changed into a prime (16491369967) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2397406 + ... + 2404274.

It is an arithmetic number, because the mean of its divisors is an integer number (164107125).

Almost surely, 2^16491369960 is an apocalyptic number.

16491369960 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 16491369960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31508568000).

16491369960 is an abundant number, since it is smaller than the sum of its proper divisors (46525766040).

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

16491369960 is a wasteful number, since it uses less digits than its factorization.

16491369960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6927 (or 6911 counting only the distinct ones).

The product of its (nonzero) digits is 1889568, while the sum is 54.

The spelling of 16491369960 in words is "sixteen billion, four hundred ninety-one million, three hundred sixty-nine thousand, nine hundred sixty".