21630005155433 has 16 divisors (see below), whose sum is σ = 21720275085120. Its totient is φ = 21539883787200.

The previous prime is 21630005155403. The next prime is 21630005155439. The reversal of 21630005155433 is 33455150003612.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21630005155433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21630005155439) 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, 2477375678 + ... + 2477384408.

It is an arithmetic number, because the mean of its divisors is an integer number (1357517192820).

Almost surely, 2^{21630005155433} is an apocalyptic number.

It is an amenable number.

21630005155433 is a deficient number, since it is larger than the sum of its proper divisors (90269929687).

21630005155433 is a wasteful number, since it uses less digits than its factorization.

21630005155433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16088.

The product of its (nonzero) digits is 162000, while the sum is 38.

The spelling of 21630005155433 in words is "twenty-one trillion, six hundred thirty billion, five million, one hundred fifty-five thousand, four hundred thirty-three".