21446533564412 has 24 divisors (see below), whose sum is σ = 40968393626160. Its totient is φ = 9742469260160.

The previous prime is 21446533564399. The next prime is 21446533564447.

21446533564412 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148804337 + ... + 148948392.

It is an arithmetic number, because the mean of its divisors is an integer number (1707016401090).

Almost surely, 2^{21446533564412} is an apocalyptic number.

21446533564412 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21446533564412 is a deficient number, since it is larger than the sum of its proper divisors (19521860061748).

21446533564412 is a wasteful number, since it uses less digits than its factorization.

21446533564412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297754381 (or 297754379 counting only the distinct ones).

The product of its digits is 8294400, while the sum is 50.

The spelling of 21446533564412 in words is "twenty-one trillion, four hundred forty-six billion, five hundred thirty-three million, five hundred sixty-four thousand, four hundred twelve".