21715827262 has 16 divisors (see below), whose sum is σ = 33059625984. Its totient is φ = 10696203000.

The previous prime is 21715827253. The next prime is 21715827283. The reversal of 21715827262 is 26272851712.

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 7 ways as a sum of consecutive naturals, for example, 112687 + ... + 236917.

It is an arithmetic number, because the mean of its divisors is an integer number (2066226624).

Almost surely, 2^21715827262 is an apocalyptic number.

21715827262 is a deficient number, since it is larger than the sum of its proper divisors (11343798722).

21715827262 is a wasteful number, since it uses less digits than its factorization.

21715827262 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125535.

The product of its digits is 188160, while the sum is 43.

The spelling of 21715827262 in words is "twenty-one billion, seven hundred fifteen million, eight hundred twenty-seven thousand, two hundred sixty-two".