21852783842572 has 12 divisors (see below), whose sum is σ = 38244196150776. Its totient is φ = 10925870656640.

The previous prime is 21852783842489. The next prime is 21852783842639. The reversal of 21852783842572 is 27524838725812.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130221829 + ... + 130389532.

It is an arithmetic number, because the mean of its divisors is an integer number (3187016345898).

Almost surely, 2^{21852783842572} is an apocalyptic number.

It is an amenable number.

21852783842572 is a deficient number, since it is larger than the sum of its proper divisors (16391412308204).

21852783842572 is a wasteful number, since it uses less digits than its factorization.

21852783842572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260632328 (or 260632326 counting only the distinct ones).

The product of its digits is 120422400, while the sum is 64.

The spelling of 21852783842572 in words is "twenty-one trillion, eight hundred fifty-two billion, seven hundred eighty-three million, eight hundred forty-two thousand, five hundred seventy-two".