21652348033 has 4 divisors (see below), whose sum is σ = 21785184688. Its totient is φ = 21519511380.

The previous prime is 21652348019. The next prime is 21652348043. The reversal of 21652348033 is 33084325612.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21652348033 - 2²⁵ = 21618793601 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21652347983 and 21652348001.

It is not an unprimeable number, because it can be changed into a prime (21652348043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66418083 + ... + 66418408.

It is an arithmetic number, because the mean of its divisors is an integer number (5446296172).

Almost surely, 2^21652348033 is an apocalyptic number.

It is an amenable number.

21652348033 is a deficient number, since it is larger than the sum of its proper divisors (132836655).

21652348033 is a wasteful number, since it uses less digits than its factorization.

21652348033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132836654.

The product of its (nonzero) digits is 103680, while the sum is 37.

The spelling of 21652348033 in words is "twenty-one billion, six hundred fifty-two million, three hundred forty-eight thousand, thirty-three".