21633633055445 has 16 divisors (see below), whose sum is σ = 25984816032000. Its totient is φ = 17290608297408.

The previous prime is 21633633055403. The next prime is 21633633055493. The reversal of 21633633055445 is 54455033633612.

It is a cyclic number.

It is not a de Polignac number, because 21633633055445 - 2¹⁴ = 21633633039061 is a prime.

It is a super-3 number, since 3×21633633055445³ (a number of 41 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21633633055393 and 21633633055402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28210751 + ... + 28967459.

It is an arithmetic number, because the mean of its divisors is an integer number (1624051002000).

Almost surely, 2^{21633633055445} is an apocalyptic number.

It is an amenable number.

21633633055445 is a deficient number, since it is larger than the sum of its proper divisors (4351182976555).

21633633055445 is a wasteful number, since it uses less digits than its factorization.

21633633055445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762092.

The product of its (nonzero) digits is 11664000, while the sum is 50.

The spelling of 21633633055445 in words is "twenty-one trillion, six hundred thirty-three billion, six hundred thirty-three million, fifty-five thousand, four hundred forty-five".