21459024048 has 160 divisors (see below), whose sum is σ = 70286929920. Its totient is φ = 5479246080.

The previous prime is 21459024043. The next prime is 21459024049. The reversal of 21459024048 is 84042095412.

It is a junction number, because it is equal to n+sod(n) for n = 21459023997 and 21459024015.

It is not an unprimeable number, because it can be changed into a prime (21459024043) 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 31 ways as a sum of consecutive naturals, for example, 168861 + ... + 267267.

It is an arithmetic number, because the mean of its divisors is an integer number (439293312).

Almost surely, 2^21459024048 is an apocalyptic number.

21459024048 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21459024048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35143464960).

21459024048 is an abundant number, since it is smaller than the sum of its proper divisors (48827905872).

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

21459024048 is a wasteful number, since it uses less digits than its factorization.

21459024048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98495 (or 98489 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 39.

The spelling of 21459024048 in words is "twenty-one billion, four hundred fifty-nine million, twenty-four thousand, forty-eight".