21600850670 has 16 divisors (see below), whose sum is σ = 44436035808. Its totient is φ = 7406005920.

The previous prime is 21600850633. The next prime is 21600850681. The reversal of 21600850670 is 7605800612.

21600850670 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 21600850670.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154291721 + ... + 154291860.

It is an arithmetic number, because the mean of its divisors is an integer number (2777252238).

Almost surely, 2^21600850670 is an apocalyptic number.

21600850670 is an abundant number, since it is smaller than the sum of its proper divisors (22835185138).

21600850670 is a wasteful number, since it uses less digits than its factorization.

21600850670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308583595.

The product of its (nonzero) digits is 20160, while the sum is 35.

The spelling of 21600850670 in words is "twenty-one billion, six hundred million, eight hundred fifty thousand, six hundred seventy".