21048036024 has 32 divisors (see below), whose sum is σ = 54317514240. Its totient is φ = 6789688800.

The previous prime is 21048035959. The next prime is 21048036059. The reversal of 21048036024 is 42063084012.

It is a junction number, because it is equal to n+sod(n) for n = 21048035982 and 21048036000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14144442 + ... + 14145929.

It is an arithmetic number, because the mean of its divisors is an integer number (1697422320).

Almost surely, 2^21048036024 is an apocalyptic number.

21048036024 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21048036024 is an abundant number, since it is smaller than the sum of its proper divisors (33269478216).

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

21048036024 is a wasteful number, since it uses less digits than its factorization.

21048036024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28290411 (or 28290407 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The spelling of 21048036024 in words is "twenty-one billion, forty-eight million, thirty-six thousand, twenty-four".