21633633055423 has 8 divisors (see below), whose sum is σ = 23393565657792. Its totient is φ = 19927852225536.

The previous prime is 21633633055403. The next prime is 21633633055493. The reversal of 21633633055423 is 32455033633612.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21633633055423 - 2¹³ = 21633633047231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21633633055403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13537942290 + ... + 13537943887.

It is an arithmetic number, because the mean of its divisors is an integer number (2924195707224).

Almost surely, 2^{21633633055423} is an apocalyptic number.

21633633055423 is a deficient number, since it is larger than the sum of its proper divisors (1759932602369).

21633633055423 is a wasteful number, since it uses less digits than its factorization.

21633633055423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27075886241.

The product of its (nonzero) digits is 3499200, while the sum is 46.

The spelling of 21633633055423 in words is "twenty-one trillion, six hundred thirty-three billion, six hundred thirty-three million, fifty-five thousand, four hundred twenty-three".