21853343476108 has 12 divisors (see below), whose sum is σ = 38424599194072. Its totient is φ = 10874886563520.

The previous prime is 21853343476093. The next prime is 21853343476127. The reversal of 21853343476108 is 80167434335812.

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, 12946292685 + ... + 12946294372.

Almost surely, 2^{21853343476108} is an apocalyptic number.

It is an amenable number.

21853343476108 is a deficient number, since it is larger than the sum of its proper divisors (16571255717964).

21853343476108 is a wasteful number, since it uses less digits than its factorization.

21853343476108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25892587272 (or 25892587270 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 55.

The spelling of 21853343476108 in words is "twenty-one trillion, eight hundred fifty-three billion, three hundred forty-three million, four hundred seventy-six thousand, one hundred eight".