21235564095 has 8 divisors (see below), whose sum is σ = 33976902576. Its totient is φ = 11325634176.

The previous prime is 21235564043. The next prime is 21235564117. The reversal of 21235564095 is 59046553212.

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 21235564095 - 2¹⁵ = 21235531327 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 707852122 + ... + 707852151.

It is an arithmetic number, because the mean of its divisors is an integer number (4247112822).

Almost surely, 2^21235564095 is an apocalyptic number.

21235564095 is a deficient number, since it is larger than the sum of its proper divisors (12741338481).

21235564095 is a wasteful number, since it uses less digits than its factorization.

21235564095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1415704281.

The product of its (nonzero) digits is 324000, while the sum is 42.

The spelling of 21235564095 in words is "twenty-one billion, two hundred thirty-five million, five hundred sixty-four thousand, ninety-five".