21856300198 has 8 divisors (see below), whose sum is σ = 32878389600. Its totient is φ = 10896837000.

The previous prime is 21856300187. The next prime is 21856300259. The reversal of 21856300198 is 89100365812.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 15655678 + ... + 15657073.

It is an arithmetic number, because the mean of its divisors is an integer number (4109798700).

Almost surely, 2^21856300198 is an apocalyptic number.

21856300198 is a deficient number, since it is larger than the sum of its proper divisors (11022089402).

21856300198 is a wasteful number, since it uses less digits than its factorization.

21856300198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31313102.

The product of its (nonzero) digits is 103680, while the sum is 43.

The spelling of 21856300198 in words is "twenty-one billion, eight hundred fifty-six million, three hundred thousand, one hundred ninety-eight".