21632142078224 has 40 divisors (see below), whose sum is σ = 42313981421592. Its totient is φ = 10712544389120.

The previous prime is 21632142078193. The next prime is 21632142078259. The reversal of 21632142078224 is 42287024123612.

It can be written as a sum of positive squares in 4 ways, for example, as 91404638224 + 21540737440000 = 302332^2 + 4641200^2 .

It is a super-3 number, since 3×21632142078224³ (a number of 41 digits) contains 333 as substring.

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, 1874747 + ... + 6839514.

Almost surely, 2^{21632142078224} is an apocalyptic number.

It is an amenable number.

21632142078224 is a deficient number, since it is larger than the sum of its proper divisors (20681839343368).

21632142078224 is a wasteful number, since it uses less digits than its factorization.

21632142078224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8715755 (or 8715749 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 44.

The spelling of 21632142078224 in words is "twenty-one trillion, six hundred thirty-two billion, one hundred forty-two million, seventy-eight thousand, two hundred twenty-four".