16318495872 has 672 divisors, whose sum is σ = 58717446480. Its totient is φ = 4499131392.

The previous prime is 16318495871. The next prime is 16318495939. The reversal of 16318495872 is 27859481361.

16318495872 is a `hidden beast` number, since 1 + 6 + 3 + 18 + 49 + 587 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (672).

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

It is not an unprimeable number, because it can be changed into a prime (16318495871) by changing a digit.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 196608343 + ... + 196608425.

Almost surely, 2^16318495872 is an apocalyptic number.

16318495872 is a gapful number since it is divisible by the number (12) 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 16318495872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29358723240).

16318495872 is an abundant number, since it is smaller than the sum of its proper divisors (42398950608).

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

16318495872 is an frugal number, since it uses more digits than its factorization.

16318495872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172 (or 138 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

It can be divided in two parts, 1631 and 8495872, that added together give a triangular number (8497503 = T₄₁₂₂).

The spelling of 16318495872 in words is "sixteen billion, three hundred eighteen million, four hundred ninety-five thousand, eight hundred seventy-two".