21446433464412 has 144 divisors (see below), whose sum is σ = 58439070053280. Its totient is φ = 6105228433920.

The previous prime is 21446433464411. The next prime is 21446433464429.

21446433464412 is nontrivially palindromic in base 10.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21446433464411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5324703 + ... + 8440694.

It is an arithmetic number, because the mean of its divisors is an integer number (405826875370).

Almost surely, 2^{21446433464412} is an apocalyptic number.

21446433464412 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21446433464412 is an abundant number, since it is smaller than the sum of its proper divisors (36992636588868).

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

21446433464412 is a wasteful number, since it uses less digits than its factorization.

21446433464412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13765492 (or 13765479 counting only the distinct ones).

The product of its digits is 5308416, while the sum is 48.

The spelling of 21446433464412 in words is "twenty-one trillion, four hundred forty-six billion, four hundred thirty-three million, four hundred sixty-four thousand, four hundred twelve".