21875263611 has 8 divisors (see below), whose sum is σ = 29167944720. Its totient is φ = 14583045792.

The previous prime is 21875263603. The next prime is 21875263633. The reversal of 21875263611 is 11636257812.

It is a happy number.

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

It is not a de Polignac number, because 21875263611 - 2³ = 21875263603 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21875263601) by changing a digit.

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, 15685 + ... + 209753.

It is an arithmetic number, because the mean of its divisors is an integer number (3645993090).

Almost surely, 2^21875263611 is an apocalyptic number.

21875263611 is a deficient number, since it is larger than the sum of its proper divisors (7292681109).

21875263611 is a wasteful number, since it uses less digits than its factorization.

21875263611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231645.

The product of its digits is 120960, while the sum is 42.

The spelling of 21875263611 in words is "twenty-one billion, eight hundred seventy-five million, two hundred sixty-three thousand, six hundred eleven".