21190258848 has 48 divisors (see below), whose sum is σ = 60681198816. Its totient is φ = 6421290240.

The previous prime is 21190258829. The next prime is 21190258853. The reversal of 21190258848 is 84885209112.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 21190258797 and 21190258806.

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, 10032211 + ... + 10034322.

It is an arithmetic number, because the mean of its divisors is an integer number (1264191642).

Almost surely, 2^21190258848 is an apocalyptic number.

It is an amenable number.

21190258848 is an abundant number, since it is smaller than the sum of its proper divisors (39490939968).

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

21190258848 is a wasteful number, since it uses less digits than its factorization.

21190258848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20066557 (or 20066549 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 48.

The spelling of 21190258848 in words is "twenty-one billion, one hundred ninety million, two hundred fifty-eight thousand, eight hundred forty-eight".