21453366335412 has 48 divisors (see below), whose sum is σ = 54612498532032. Its totient is φ = 6500552282880.

The previous prime is 21453366335399. The next prime is 21453366335419.

21453366335412 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21453366335419) 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 15 ways as a sum of consecutive naturals, for example, 4004263 + ... + 7677294.

It is an arithmetic number, because the mean of its divisors is an integer number (1137760386084).

Almost surely, 2^{21453366335412} is an apocalyptic number.

21453366335412 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21453366335412 is an abundant number, since it is smaller than the sum of its proper divisors (33159132196620).

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

21453366335412 is a wasteful number, since it uses less digits than its factorization.

21453366335412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11695488 (or 11695486 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 48.

The spelling of 21453366335412 in words is "twenty-one trillion, four hundred fifty-three billion, three hundred sixty-six million, three hundred thirty-five thousand, four hundred twelve".