21852851288 has 16 divisors (see below), whose sum is σ = 40976001360. Its totient is φ = 10925917600.

The previous prime is 21852851281. The next prime is 21852851303. The reversal of 21852851288 is 88215825812.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21852851281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169658 + ... + 269238.

It is an arithmetic number, because the mean of its divisors is an integer number (2561000085).

Almost surely, 2^21852851288 is an apocalyptic number.

It is an amenable number.

21852851288 is a deficient number, since it is larger than the sum of its proper divisors (19123150072).

21852851288 is a wasteful number, since it uses less digits than its factorization.

21852851288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127018 (or 127014 counting only the distinct ones).

The product of its digits is 819200, while the sum is 50.

The spelling of 21852851288 in words is "twenty-one billion, eight hundred fifty-two million, eight hundred fifty-one thousand, two hundred eighty-eight".