20648940711 has 8 divisors (see below), whose sum is σ = 31465052544. Its totient is φ = 11799394680.

The previous prime is 20648940709. The next prime is 20648940749. The reversal of 20648940711 is 11704984602.

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

It is not a de Polignac number, because 20648940711 - 2¹ = 20648940709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20648940701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 491641425 + ... + 491641466.

It is an arithmetic number, because the mean of its divisors is an integer number (3933131568).

Almost surely, 2^20648940711 is an apocalyptic number.

20648940711 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20648940711 is a deficient number, since it is larger than the sum of its proper divisors (10816111833).

20648940711 is an equidigital number, since it uses as much as digits as its factorization.

20648940711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 983282901.

The product of its (nonzero) digits is 96768, while the sum is 42.

The spelling of 20648940711 in words is "twenty billion, six hundred forty-eight million, nine hundred forty thousand, seven hundred eleven".