20768095057 has 2 divisors, whose sum is σ = 20768095058. Its totient is φ = 20768095056.

The previous prime is 20768095013. The next prime is 20768095063. The reversal of 20768095057 is 75059086702.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12256925521 + 8511169536 = 110711^2 + 92256^2 .

It is a cyclic number.

It is not a de Polignac number, because 20768095057 - 2¹¹ = 20768093009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20768095057.

It is not a weakly prime, because it can be changed into another prime (20768095097) 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, 10384047528 + 10384047529.

It is an arithmetic number, because the mean of its divisors is an integer number (10384047529).

Almost surely, 2^20768095057 is an apocalyptic number.

It is an amenable number.

20768095057 is a deficient number, since it is larger than the sum of its proper divisors (1).

20768095057 is an equidigital number, since it uses as much as digits as its factorization.

20768095057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1058400, while the sum is 49.

The spelling of 20768095057 in words is "twenty billion, seven hundred sixty-eight million, ninety-five thousand, fifty-seven".