20388353852 has 24 divisors (see below), whose sum is σ = 36517426176. Its totient is φ = 9954908208.

The previous prime is 20388353801. The next prime is 20388353893. The reversal of 20388353852 is 25835388302.

It is a super-4 number, since 4×20388353852⁴ (a number of 42 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20388353797 and 20388353806.

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, 994853 + ... + 1015139.

It is an arithmetic number, because the mean of its divisors is an integer number (1521559424).

Almost surely, 2^20388353852 is an apocalyptic number.

It is an amenable number.

20388353852 is a deficient number, since it is larger than the sum of its proper divisors (16129072324).

20388353852 is a wasteful number, since it uses less digits than its factorization.

20388353852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26177 (or 26175 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 47.

The spelling of 20388353852 in words is "twenty billion, three hundred eighty-eight million, three hundred fifty-three thousand, eight hundred fifty-two".