16466561472 has 28 divisors (see below), whose sum is σ = 43567777736. Its totient is φ = 5488853760.

The previous prime is 16466561459. The next prime is 16466561477. The reversal of 16466561472 is 27416566461.

It is a super-2 number, since 2×16466561472² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16466561477) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 42881479 + ... + 42881862.

It is an arithmetic number, because the mean of its divisors is an integer number (1555992062).

Almost surely, 2^16466561472 is an apocalyptic number.

16466561472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16466561472 is an abundant number, since it is smaller than the sum of its proper divisors (27101216264).

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

16466561472 is an equidigital number, since it uses as much as digits as its factorization.

16466561472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85763356 (or 85763346 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 48.

The spelling of 16466561472 in words is "sixteen billion, four hundred sixty-six million, five hundred sixty-one thousand, four hundred seventy-two".