21725532383 has 4 divisors (see below), whose sum is σ = 21725832720. Its totient is φ = 21725232048.

The previous prime is 21725532371. The next prime is 21725532401. The reversal of 21725532383 is 38323552712.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 21725532383 - 2²⁶ = 21658423519 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21725532383.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21725552383) 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 3 ways as a sum of consecutive naturals, for example, 32003 + ... + 210891.

It is an arithmetic number, because the mean of its divisors is an integer number (5431458180).

Almost surely, 2^21725532383 is an apocalyptic number.

21725532383 is a deficient number, since it is larger than the sum of its proper divisors (300337).

21725532383 is a wasteful number, since it uses less digits than its factorization.

21725532383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300336.

The product of its digits is 302400, while the sum is 41.

The spelling of 21725532383 in words is "twenty-one billion, seven hundred twenty-five million, five hundred thirty-two thousand, three hundred eighty-three".