20863844737711 has 8 divisors (see below), whose sum is σ = 21088300395344. Its totient is φ = 20639580192000.

The previous prime is 20863844737699. The next prime is 20863844737733. The reversal of 20863844737711 is 11773744836802.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20863844737711 - 2⁷ = 20863844737583 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20863844737711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20863844737751) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47558460 + ... + 47995153.

It is an arithmetic number, because the mean of its divisors is an integer number (2636037549418).

Almost surely, 2^{20863844737711} is an apocalyptic number.

20863844737711 is a deficient number, since it is larger than the sum of its proper divisors (224455657633).

20863844737711 is an equidigital number, since it uses as much as digits as its factorization.

20863844737711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95555961.

The product of its (nonzero) digits is 37933056, while the sum is 61.

Subtracting from 20863844737711 its reverse (11773744836802), we obtain a palindrome (9090099900909).

The spelling of 20863844737711 in words is "twenty trillion, eight hundred sixty-three billion, eight hundred forty-four million, seven hundred thirty-seven thousand, seven hundred eleven".