21889135295 has 8 divisors (see below), whose sum is σ = 26507944320. Its totient is φ = 17350653600.

The previous prime is 21889135277. The next prime is 21889135319. The reversal of 21889135295 is 59253198812.

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

It is not a de Polignac number, because 21889135295 - 2¹⁶ = 21889069759 is a prime.

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, 20081231 + ... + 20082320.

It is an arithmetic number, because the mean of its divisors is an integer number (3313493040).

Almost surely, 2^21889135295 is an apocalyptic number.

21889135295 is a deficient number, since it is larger than the sum of its proper divisors (4618809025).

21889135295 is a wasteful number, since it uses less digits than its factorization.

21889135295 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40163665.

The product of its digits is 1555200, while the sum is 53.

The spelling of 21889135295 in words is "twenty-one billion, eight hundred eighty-nine million, one hundred thirty-five thousand, two hundred ninety-five".