16172454209472 has 168 divisors, whose sum is σ = 52442495868672. Its totient is φ = 4900743648000.

The previous prime is 16172454209453. The next prime is 16172454209477. The reversal of 16172454209472 is 27490245427161.

It is a happy number.

16172454209472 is a `hidden beast` number, since 1 + 6 + 1 + 7 + 2 + 4 + 542 + 0 + 94 + 7 + 2 = 666.

It is a super-2 number, since 2×16172454209472² (a number of 27 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16172454209477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47096904 + ... + 47439047.

It is an arithmetic number, because the mean of its divisors is an integer number (312157713504).

Almost surely, 2^{16172454209472} is an apocalyptic number.

16172454209472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16172454209472 is an abundant number, since it is smaller than the sum of its proper divisors (36270041659200).

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

16172454209472 is an equidigital number, since it uses as much as digits as its factorization.

16172454209472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94535989 (or 94535967 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 54.

The spelling of 16172454209472 in words is "sixteen trillion, one hundred seventy-two billion, four hundred fifty-four million, two hundred nine thousand, four hundred seventy-two".