21190550848 has 28 divisors (see below), whose sum is σ = 42944686272. Its totient is φ = 10369842560.

The previous prime is 21190550827. The next prime is 21190550863. The reversal of 21190550848 is 84805509112.

It is a congruent number.

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, 3519358 + ... + 3525373.

Almost surely, 2^21190550848 is an apocalyptic number.

It is an amenable number.

21190550848 is an abundant number, since it is smaller than the sum of its proper divisors (21754135424).

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

21190550848 is an equidigital number, since it uses as much as digits as its factorization.

21190550848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7044790 (or 7044780 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 43.

The spelling of 21190550848 in words is "twenty-one billion, one hundred ninety million, five hundred fifty thousand, eight hundred forty-eight".