20132312177 has 2 divisors, whose sum is σ = 20132312178. Its totient is φ = 20132312176.

The previous prime is 20132312147. The next prime is 20132312197. The reversal of 20132312177 is 77121323102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17139784561 + 2992527616 = 130919^2 + 54704^2 .

It is a cyclic number.

It is not a de Polignac number, because 20132312177 - 2¹⁰ = 20132311153 is a prime.

It is not a weakly prime, because it can be changed into another prime (20132312117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10066156088 + 10066156089.

It is an arithmetic number, because the mean of its divisors is an integer number (10066156089).

Almost surely, 2^20132312177 is an apocalyptic number.

It is an amenable number.

20132312177 is a deficient number, since it is larger than the sum of its proper divisors (1).

20132312177 is an equidigital number, since it uses as much as digits as its factorization.

20132312177 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 29.

Adding to 20132312177 its reverse (77121323102), we get a palindrome (97253635279).

The spelling of 20132312177 in words is "twenty billion, one hundred thirty-two million, three hundred twelve thousand, one hundred seventy-seven".