21000163098 has 64 divisors (see below), whose sum is σ = 45502364160. Its totient is φ = 6439704768.

The previous prime is 21000163073. The next prime is 21000163103. The reversal of 21000163098 is 89036100012.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 835665 + ... + 860427.

It is an arithmetic number, because the mean of its divisors is an integer number (710974440).

Almost surely, 2^21000163098 is an apocalyptic number.

21000163098 is an abundant number, since it is smaller than the sum of its proper divisors (24502201062).

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

21000163098 is a wasteful number, since it uses less digits than its factorization.

21000163098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25003.

The product of its (nonzero) digits is 2592, while the sum is 30.

The spelling of 21000163098 in words is "twenty-one billion, one hundred sixty-three thousand, ninety-eight".