21000163095 has 48 divisors (see below), whose sum is σ = 38185992000. Its totient is φ = 10661521920.

The previous prime is 21000163073. The next prime is 21000163103. The reversal of 21000163095 is 59036100012.

21000163095 is a `hidden beast` number, since 21 + 0 + 0 + 0 + 1 + 630 + 9 + 5 = 666.

It is not a de Polignac number, because 21000163095 - 2⁶ = 21000163031 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20670 + ... + 205979.

It is an arithmetic number, because the mean of its divisors is an integer number (795541500).

Almost surely, 2^21000163095 is an apocalyptic number.

21000163095 is a deficient number, since it is larger than the sum of its proper divisors (17185828905).

21000163095 is a wasteful number, since it uses less digits than its factorization.

21000163095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226760 (or 226757 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The spelling of 21000163095 in words is "twenty-one billion, one hundred sixty-three thousand, ninety-five".