20911760927 has 2 divisors, whose sum is σ = 20911760928. Its totient is φ = 20911760926.

The previous prime is 20911760893. The next prime is 20911760957. The reversal of 20911760927 is 72906711902.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20911760927 - 2⁸ = 20911760671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20911760957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10455880463 + 10455880464.

It is an arithmetic number, because the mean of its divisors is an integer number (10455880464).

Almost surely, 2^20911760927 is an apocalyptic number.

20911760927 is a deficient number, since it is larger than the sum of its proper divisors (1).

20911760927 is an equidigital number, since it uses as much as digits as its factorization.

20911760927 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 95256, while the sum is 44.

The spelling of 20911760927 in words is "twenty billion, nine hundred eleven million, seven hundred sixty thousand, nine hundred twenty-seven".