20346045877 has 2 divisors, whose sum is σ = 20346045878. Its totient is φ = 20346045876.

The previous prime is 20346045803. The next prime is 20346045887. The reversal of 20346045877 is 77854064302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14243467716 + 6102578161 = 119346^2 + 78119^2 .

It is a cyclic number.

It is not a de Polignac number, because 20346045877 - 2¹¹ = 20346043829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20346045887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10173022938 + 10173022939.

It is an arithmetic number, because the mean of its divisors is an integer number (10173022939).

Almost surely, 2^20346045877 is an apocalyptic number.

It is an amenable number.

20346045877 is a deficient number, since it is larger than the sum of its proper divisors (1).

20346045877 is an equidigital number, since it uses as much as digits as its factorization.

20346045877 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1128960, while the sum is 46.

The spelling of 20346045877 in words is "twenty billion, three hundred forty-six million, forty-five thousand, eight hundred seventy-seven".