21598024848 has 20 divisors (see below), whose sum is σ = 55794897648. Its totient is φ = 7199341600.

The previous prime is 21598024829. The next prime is 21598024897. The reversal of 21598024848 is 84842089512.

It is a self number, because there is not a number n which added to its sum of digits gives 21598024848.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224979378 + ... + 224979473.

Almost surely, 2^21598024848 is an apocalyptic number.

It is an amenable number.

21598024848 is an abundant number, since it is smaller than the sum of its proper divisors (34196872800).

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

21598024848 is a wasteful number, since it uses less digits than its factorization.

21598024848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449958862 (or 449958856 counting only the distinct ones).

The product of its (nonzero) digits is 1474560, while the sum is 51.

The spelling of 21598024848 in words is "twenty-one billion, five hundred ninety-eight million, twenty-four thousand, eight hundred forty-eight".