20133132377 has 2 divisors, whose sum is σ = 20133132378. Its totient is φ = 20133132376.

The previous prime is 20133132361. The next prime is 20133132389. The reversal of 20133132377 is 77323133102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14949708361 + 5183424016 = 122269^2 + 71996^2 .

It is a cyclic number.

It is not a de Polignac number, because 20133132377 - 2⁴ = 20133132361 is a prime.

It is not a weakly prime, because it can be changed into another prime (20133132577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10066566188 + 10066566189.

It is an arithmetic number, because the mean of its divisors is an integer number (10066566189).

Almost surely, 2^20133132377 is an apocalyptic number.

It is an amenable number.

20133132377 is a deficient number, since it is larger than the sum of its proper divisors (1).

20133132377 is an equidigital number, since it uses as much as digits as its factorization.

20133132377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15876, while the sum is 32.

Adding to 20133132377 its reverse (77323133102), we get a palindrome (97456265479).

The spelling of 20133132377 in words is "twenty billion, one hundred thirty-three million, one hundred thirty-two thousand, three hundred seventy-seven".