20188511038652 has 12 divisors (see below), whose sum is σ = 38541702892056. Its totient is φ = 9176595926640.

The previous prime is 20188511038589. The next prime is 20188511038669. The reversal of 20188511038652 is 25683011588102.

It is a self number, because there is not a number n which added to its sum of digits gives 20188511038652.

It is a congruent number.

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, 229414898123 + ... + 229414898210.

It is an arithmetic number, because the mean of its divisors is an integer number (3211808574338).

Almost surely, 2^{20188511038652} is an apocalyptic number.

20188511038652 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20188511038652 is a deficient number, since it is larger than the sum of its proper divisors (18353191853404).

20188511038652 is a wasteful number, since it uses less digits than its factorization.

20188511038652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458829796348 (or 458829796346 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 50.

It can be divided in two parts, 2018851 and 1038652, that added together give a palindrome (3057503).

The spelling of 20188511038652 in words is "twenty trillion, one hundred eighty-eight billion, five hundred eleven million, thirty-eight thousand, six hundred fifty-two".