21008292886 has 8 divisors (see below), whose sum is σ = 36014216400. Its totient is φ = 9003554088.

The previous prime is 21008292881. The next prime is 21008292917. The reversal of 21008292886 is 68829280012.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21008292881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 750296161 + ... + 750296188.

It is an arithmetic number, because the mean of its divisors is an integer number (4501777050).

Almost surely, 2^21008292886 is an apocalyptic number.

21008292886 is a deficient number, since it is larger than the sum of its proper divisors (15005923514).

21008292886 is a wasteful number, since it uses less digits than its factorization.

21008292886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1500592358.

The product of its (nonzero) digits is 221184, while the sum is 46.

The spelling of 21008292886 in words is "twenty-one billion, eight million, two hundred ninety-two thousand, eight hundred eighty-six".