20238229186537 has 2 divisors, whose sum is σ = 20238229186538. Its totient is φ = 20238229186536.

The previous prime is 20238229186531. The next prime is 20238229186541. The reversal of 20238229186537 is 73568192283202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18932628154896 + 1305601031641 = 4351164^2 + 1142629^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20238229186537 is a prime.

It is not a weakly prime, because it can be changed into another prime (20238229186531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10119114593268 + 10119114593269.

It is an arithmetic number, because the mean of its divisors is an integer number (10119114593269).

Almost surely, 2^{20238229186537} is an apocalyptic number.

It is an amenable number.

20238229186537 is a deficient number, since it is larger than the sum of its proper divisors (1).

20238229186537 is an equidigital number, since it uses as much as digits as its factorization.

20238229186537 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17418240, while the sum is 58.

The spelling of 20238229186537 in words is "twenty trillion, two hundred thirty-eight billion, two hundred twenty-nine million, one hundred eighty-six thousand, five hundred thirty-seven".