20061441677 has 2 divisors, whose sum is σ = 20061441678. Its totient is φ = 20061441676.

The previous prime is 20061441661. The next prime is 20061441689. The reversal of 20061441677 is 77614416002.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19803807076 + 257634601 = 140726^2 + 16051^2 .

It is a cyclic number.

It is not a de Polignac number, because 20061441677 - 2⁴ = 20061441661 is a prime.

It is a super-2 number, since 2×20061441677² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20061441677.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20061441577) 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, 10030720838 + 10030720839.

It is an arithmetic number, because the mean of its divisors is an integer number (10030720839).

Almost surely, 2^20061441677 is an apocalyptic number.

It is an amenable number.

20061441677 is a deficient number, since it is larger than the sum of its proper divisors (1).

20061441677 is an equidigital number, since it uses as much as digits as its factorization.

20061441677 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56448, while the sum is 38.

Adding to 20061441677 its reverse (77614416002), we get a palindrome (97675857679).

The spelling of 20061441677 in words is "twenty billion, sixty-one million, four hundred forty-one thousand, six hundred seventy-seven".