20536314187 has 2 divisors, whose sum is σ = 20536314188. Its totient is φ = 20536314186.

The previous prime is 20536314181. The next prime is 20536314223. The reversal of 20536314187 is 78141363502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20536314187 - 2³¹ = 18388830539 is a prime.

It is not a weakly prime, because it can be changed into another prime (20536314181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10268157093 + 10268157094.

It is an arithmetic number, because the mean of its divisors is an integer number (10268157094).

Almost surely, 2^20536314187 is an apocalyptic number.

20536314187 is a deficient number, since it is larger than the sum of its proper divisors (1).

20536314187 is an equidigital number, since it uses as much as digits as its factorization.

20536314187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 40.

Adding to 20536314187 its reverse (78141363502), we get a palindrome (98677677689).

The spelling of 20536314187 in words is "twenty billion, five hundred thirty-six million, three hundred fourteen thousand, one hundred eighty-seven".