20873424188 has 24 divisors (see below), whose sum is σ = 36863521632. Its totient is φ = 10341385664.

The previous prime is 20873424181. The next prime is 20873424199. The reversal of 20873424188 is 88142437802.

It is a happy number.

It is a super-3 number, since 3×20873424188³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20873424181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162470 + ... + 261042.

It is an arithmetic number, because the mean of its divisors is an integer number (1535980068).

Almost surely, 2^20873424188 is an apocalyptic number.

It is an amenable number.

20873424188 is a deficient number, since it is larger than the sum of its proper divisors (15990097444).

20873424188 is a wasteful number, since it uses less digits than its factorization.

20873424188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99061 (or 99059 counting only the distinct ones).

The product of its (nonzero) digits is 688128, while the sum is 47.

The spelling of 20873424188 in words is "twenty billion, eight hundred seventy-three million, four hundred twenty-four thousand, one hundred eighty-eight".