20289203202863 has 24 divisors (see below), whose sum is σ = 24558681097152. Its totient is φ = 16699583793984.

The previous prime is 20289203202841. The next prime is 20289203202871. The reversal of 20289203202863 is 36820230298202.

It is not a de Polignac number, because 20289203202863 - 2⁶ = 20289203202799 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20289203205863) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 82990220 + ... + 83234337.

It is an arithmetic number, because the mean of its divisors is an integer number (1023278379048).

Almost surely, 2^{20289203202863} is an apocalyptic number.

20289203202863 is a deficient number, since it is larger than the sum of its proper divisors (4269477894289).

20289203202863 is a wasteful number, since it uses less digits than its factorization.

20289203202863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166224671 (or 166224664 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 47.

The spelling of 20289203202863 in words is "twenty trillion, two hundred eighty-nine billion, two hundred three million, two hundred two thousand, eight hundred sixty-three".