21848484812 has 48 divisors (see below), whose sum is σ = 49313214720. Its totient is φ = 8218862400.

The previous prime is 21848484811. The next prime is 21848484851.

21848484812 is nontrivially palindromic in base 10.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (21848484811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1214114 + ... + 1231977.

It is an arithmetic number, because the mean of its divisors is an integer number (1027358640).

Almost surely, 2^21848484812 is an apocalyptic number.

21848484812 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21848484812 is an abundant number, since it is smaller than the sum of its proper divisors (27464729908).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21848484812 is a wasteful number, since it uses less digits than its factorization.

21848484812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2446142 (or 2446140 counting only the distinct ones).

The product of its digits is 1048576, while the sum is 50.

The spelling of 21848484812 in words is "twenty-one billion, eight hundred forty-eight million, four hundred eighty-four thousand, eight hundred twelve".