21442025456016 has 40 divisors (see below), whose sum is σ = 60427526286624. Its totient is φ = 6497583471360.

The previous prime is 21442025456009. The next prime is 21442025456023. The reversal of 21442025456016 is 61065452024412.

It is an interprime number because it is at equal distance from previous prime (21442025456009) and next prime (21442025456023).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 20304947821 + ... + 20304948876.

Almost surely, 2^{21442025456016} is an apocalyptic number.

It is an amenable number.

21442025456016 is an abundant number, since it is smaller than the sum of its proper divisors (38985500830608).

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

21442025456016 is a wasteful number, since it uses less digits than its factorization.

21442025456016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40609896719 (or 40609896713 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 42.

The spelling of 21442025456016 in words is "twenty-one trillion, four hundred forty-two billion, twenty-five million, four hundred fifty-six thousand, sixteen".