21000190848 has 1024 divisors, whose sum is σ = 79949721600. Its totient is φ = 4723310592.

The previous prime is 21000190807. The next prime is 21000190873. The reversal of 21000190848 is 84809100012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 396229990 + ... + 396230042.

It is an arithmetic number, because the mean of its divisors is an integer number (78075900).

Almost surely, 2^21000190848 is an apocalyptic number.

21000190848 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 21000190848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39974860800).

21000190848 is an abundant number, since it is smaller than the sum of its proper divisors (58949530752).

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

21000190848 is a wasteful number, since it uses less digits than its factorization.

21000190848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 33.

The spelling of 21000190848 in words is "twenty-one billion, one hundred ninety thousand, eight hundred forty-eight".