21876274585 has 16 divisors (see below), whose sum is σ = 29123426880. Its totient is φ = 15640354240.

The previous prime is 21876274583. The next prime is 21876274601. The reversal of 21876274585 is 58547267812.

It is not a de Polignac number, because 21876274585 - 2¹ = 21876274583 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is not an unprimeable number, because it can be changed into a prime (21876274583) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3367522 + ... + 3374011.

It is an arithmetic number, because the mean of its divisors is an integer number (1820214180).

Almost surely, 2^21876274585 is an apocalyptic number.

It is an amenable number.

21876274585 is a deficient number, since it is larger than the sum of its proper divisors (7247152295).

21876274585 is a wasteful number, since it uses less digits than its factorization.

21876274585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6741608.

The product of its digits is 7526400, while the sum is 55.

The spelling of 21876274585 in words is "twenty-one billion, eight hundred seventy-six million, two hundred seventy-four thousand, five hundred eighty-five".