21446494433296 has 15 divisors (see below), whose sum is σ = 41552618855071. Its totient is φ = 10723237954576.

The previous prime is 21446494433281. The next prime is 21446494433297. The reversal of 21446494433296 is 69233449464412.

The square root of 21446494433296 is 4631036.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21446494433297) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 17945265 + ... + 19103023.

Almost surely, 2^{21446494433296} is an apocalyptic number.

21446494433296 is the 4631036-th square number.

It is an amenable number.

21446494433296 is a deficient number, since it is larger than the sum of its proper divisors (20106124421775).

21446494433296 is an frugal number, since it uses more digits than its factorization.

21446494433296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2315526 (or 1157761 counting only the distinct ones).

The product of its digits is 107495424, while the sum is 61.

The spelling of 21446494433296 in words is "twenty-one trillion, four hundred forty-six billion, four hundred ninety-four million, four hundred thirty-three thousand, two hundred ninety-six".