21484842147 has 48 divisors (see below), whose sum is σ = 32406461568. Its totient is φ = 13706115840.

The previous prime is 21484842107. The next prime is 21484842167. The reversal of 21484842147 is 74124848412.

21484842147 is a `hidden beast` number, since 2 + 148 + 48 + 421 + 47 = 666.

It is not a de Polignac number, because 21484842147 - 2⁸ = 21484841891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21484842107) 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 47 ways as a sum of consecutive naturals, for example, 4461513 + ... + 4466325.

It is an arithmetic number, because the mean of its divisors is an integer number (675134616).

Almost surely, 2^21484842147 is an apocalyptic number.

21484842147 is a deficient number, since it is larger than the sum of its proper divisors (10921619421).

21484842147 is a wasteful number, since it uses less digits than its factorization.

21484842147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5100 (or 5097 counting only the distinct ones).

The product of its digits is 458752, while the sum is 45.

The spelling of 21484842147 in words is "twenty-one billion, four hundred eighty-four million, eight hundred forty-two thousand, one hundred forty-seven".