20848605761563 has 16 divisors (see below), whose sum is σ = 21455033169024. Its totient is φ = 20249066460160.

The previous prime is 20848605761551. The next prime is 20848605761573. The reversal of 20848605761563 is 36516750684802.

It is a happy number.

It is not a de Polignac number, because 20848605761563 - 2²⁹ = 20848068890651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20848605761573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18094953 + ... + 19212613.

It is an arithmetic number, because the mean of its divisors is an integer number (1340939573064).

Almost surely, 2^{20848605761563} is an apocalyptic number.

20848605761563 is a deficient number, since it is larger than the sum of its proper divisors (606427407461).

20848605761563 is a wasteful number, since it uses less digits than its factorization.

20848605761563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120742.

The product of its (nonzero) digits is 58060800, while the sum is 61.

The spelling of 20848605761563 in words is "twenty trillion, eight hundred forty-eight billion, six hundred five million, seven hundred sixty-one thousand, five hundred sixty-three".