20003240177 has 2 divisors, whose sum is σ = 20003240178. Its totient is φ = 20003240176.

The previous prime is 20003240137. The next prime is 20003240233. The reversal of 20003240177 is 77104230002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19720865761 + 282374416 = 140431^2 + 16804^2 .

It is a cyclic number.

It is not a de Polignac number, because 20003240177 - 2⁶ = 20003240113 is a prime.

It is not a weakly prime, because it can be changed into another prime (20003240137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001620088 + 10001620089.

It is an arithmetic number, because the mean of its divisors is an integer number (10001620089).

Almost surely, 2^20003240177 is an apocalyptic number.

It is an amenable number.

20003240177 is a deficient number, since it is larger than the sum of its proper divisors (1).

20003240177 is an equidigital number, since it uses as much as digits as its factorization.

20003240177 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2352, while the sum is 26.

Adding to 20003240177 its reverse (77104230002), we get a palindrome (97107470179).

The spelling of 20003240177 in words is "twenty billion, three million, two hundred forty thousand, one hundred seventy-seven".