20885877812633 has 2 divisors, whose sum is σ = 20885877812634. Its totient is φ = 20885877812632.

The previous prime is 20885877812629. The next prime is 20885877812707. The reversal of 20885877812633 is 33621877858802.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20164886624089 + 720991188544 = 4490533^2 + 849112^2 .

It is a cyclic number.

It is not a de Polignac number, because 20885877812633 - 2² = 20885877812629 is a prime.

It is not a weakly prime, because it can be changed into another prime (20885877812333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10442938906316 + 10442938906317.

It is an arithmetic number, because the mean of its divisors is an integer number (10442938906317).

Almost surely, 2^{20885877812633} is an apocalyptic number.

It is an amenable number.

20885877812633 is a deficient number, since it is larger than the sum of its proper divisors (1).

20885877812633 is an equidigital number, since it uses as much as digits as its factorization.

20885877812633 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216760320, while the sum is 68.

The spelling of 20885877812633 in words is "twenty trillion, eight hundred eighty-five billion, eight hundred seventy-seven million, eight hundred twelve thousand, six hundred thirty-three".