16440172000 has 96 divisors (see below), whose sum is σ = 46164081600. Its totient is φ = 5636620800.

The previous prime is 16440171959. The next prime is 16440172079. The reversal of 16440172000 is 27104461.

It is a super-3 number, since 3×16440172000³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 265575 + ... + 321574.

It is an arithmetic number, because the mean of its divisors is an integer number (480875850).

Almost surely, 2^16440172000 is an apocalyptic number.

16440172000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16440172000 is an abundant number, since it is smaller than the sum of its proper divisors (29723909600).

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

16440172000 is an equidigital number, since it uses as much as digits as its factorization.

16440172000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587181 (or 587163 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

Adding to 16440172000 its reverse (27104461), we get a palindrome (16467276461).

The spelling of 16440172000 in words is "sixteen billion, four hundred forty million, one hundred seventy-two thousand".