21706868485 has 8 divisors (see below), whose sum is σ = 26654015520. Its totient is φ = 16961645904.

The previous prime is 21706868479. The next prime is 21706868509. The reversal of 21706868485 is 58486860712.

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

It is a cyclic number.

It is not a de Polignac number, because 21706868485 - 2²⁹ = 21169997573 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50480875 + ... + 50481304.

It is an arithmetic number, because the mean of its divisors is an integer number (3331751940).

Almost surely, 2^21706868485 is an apocalyptic number.

It is an amenable number.

21706868485 is a deficient number, since it is larger than the sum of its proper divisors (4947147035).

21706868485 is a wasteful number, since it uses less digits than its factorization.

21706868485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100962227.

The product of its (nonzero) digits is 5160960, while the sum is 55.

The spelling of 21706868485 in words is "twenty-one billion, seven hundred six million, eight hundred sixty-eight thousand, four hundred eighty-five".