20394749411 has 2 divisors, whose sum is σ = 20394749412. Its totient is φ = 20394749410.

The previous prime is 20394749399. The next prime is 20394749423. The reversal of 20394749411 is 11494749302.

It is a balanced prime because it is at equal distance from previous prime (20394749399) and next prime (20394749423).

It is a cyclic number.

It is not a de Polignac number, because 20394749411 - 2²⁶ = 20327640547 is a prime.

It is not a weakly prime, because it can be changed into another prime (20394749471) 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 as a sum of consecutive naturals, namely, 10197374705 + 10197374706.

It is an arithmetic number, because the mean of its divisors is an integer number (10197374706).

Almost surely, 2^20394749411 is an apocalyptic number.

20394749411 is a deficient number, since it is larger than the sum of its proper divisors (1).

20394749411 is an equidigital number, since it uses as much as digits as its factorization.

20394749411 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 44.

The spelling of 20394749411 in words is "twenty billion, three hundred ninety-four million, seven hundred forty-nine thousand, four hundred eleven".