21821428483 has 8 divisors (see below), whose sum is σ = 22873512816. Its totient is φ = 20794099200.

The previous prime is 21821428481. The next prime is 21821428523. The reversal of 21821428483 is 38482412812.

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 21821428483 - 2¹ = 21821428481 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21821428481) 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 7 ways as a sum of consecutive naturals, for example, 6186958 + ... + 6190483.

It is an arithmetic number, because the mean of its divisors is an integer number (2859189102).

Almost surely, 2^21821428483 is an apocalyptic number.

21821428483 is a deficient number, since it is larger than the sum of its proper divisors (1052084333).

21821428483 is a wasteful number, since it uses less digits than its factorization.

21821428483 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12377525.

The product of its digits is 196608, while the sum is 43.

The spelling of 21821428483 in words is "twenty-one billion, eight hundred twenty-one million, four hundred twenty-eight thousand, four hundred eighty-three".