21674326540032 has 216 divisors, whose sum is σ = 66897514145280. Its totient is φ = 6991717616640.

The previous prime is 21674326540021. The next prime is 21674326540039. The reversal of 21674326540032 is 23004562347612.

21674326540032 is a `hidden beast` number, since 2 + 1 + 6 + 74 + 3 + 2 + 6 + 540 + 0 + 32 = 666.

It is a tau number, because it is divible by the number of its divisors (216).

It is a super-2 number, since 2×21674326540032² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21674326540032.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21674326540039) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3691182 + ... + 7548077.

Almost surely, 2^{21674326540032} is an apocalyptic number.

It is an amenable number.

21674326540032 is an abundant number, since it is smaller than the sum of its proper divisors (45223187605248).

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

21674326540032 is an equidigital number, since it uses as much as digits as its factorization.

21674326540032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11239321 (or 11239295 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 45.

Adding to 21674326540032 its reverse (23004562347612), we get a palindrome (44678888887644).

The spelling of 21674326540032 in words is "twenty-one trillion, six hundred seventy-four billion, three hundred twenty-six million, five hundred forty thousand, thirty-two".