20041311977 has 2 divisors, whose sum is σ = 20041311978. Its totient is φ = 20041311976.

The previous prime is 20041311943. The next prime is 20041312003. The reversal of 20041311977 is 77911314002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13175366656 + 6865945321 = 114784^2 + 82861^2 .

It is a cyclic number.

It is not a de Polignac number, because 20041311977 - 2¹⁰ = 20041310953 is a prime.

It is not a weakly prime, because it can be changed into another prime (20041311937) 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, 10020655988 + 10020655989.

It is an arithmetic number, because the mean of its divisors is an integer number (10020655989).

Almost surely, 2^20041311977 is an apocalyptic number.

It is an amenable number.

20041311977 is a deficient number, since it is larger than the sum of its proper divisors (1).

20041311977 is an equidigital number, since it uses as much as digits as its factorization.

20041311977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 35.

Adding to 20041311977 its reverse (77911314002), we get a palindrome (97952625979).

The spelling of 20041311977 in words is "twenty billion, forty-one million, three hundred eleven thousand, nine hundred seventy-seven".