20238229186544 has 20 divisors (see below), whose sum is σ = 39211647046200. Its totient is φ = 10119094464960.

The previous prime is 20238229186543. The next prime is 20238229186631. The reversal of 20238229186544 is 44568192283202.

It is a self number, because there is not a number n which added to its sum of digits gives 20238229186544.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20238229186541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10198739 + ... + 12020429.

It is an arithmetic number, because the mean of its divisors is an integer number (1960582352310).

Almost surely, 2^{20238229186544} is an apocalyptic number.

It is an amenable number.

20238229186544 is a deficient number, since it is larger than the sum of its proper divisors (18973417859656).

20238229186544 is a wasteful number, since it uses less digits than its factorization.

20238229186544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2516048 (or 2516042 counting only the distinct ones).

The product of its (nonzero) digits is 13271040, while the sum is 56.

The spelling of 20238229186544 in words is "twenty trillion, two hundred thirty-eight billion, two hundred twenty-nine million, one hundred eighty-six thousand, five hundred forty-four".