133617617677 has 2 divisors, whose sum is σ = 133617617678. Its totient is φ = 133617617676.

The previous prime is 133617617659. The next prime is 133617617717. The reversal of 133617617677 is 776716716331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83052899721 + 50564717956 = 288189^2 + 224866^2 .

It is a cyclic number.

It is not a de Polignac number, because 133617617677 - 2²³ = 133609229069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133617612677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66808808838 + 66808808839.

It is an arithmetic number, because the mean of its divisors is an integer number (66808808839).

Almost surely, 2^133617617677 is an apocalyptic number.

It is an amenable number.

133617617677 is a deficient number, since it is larger than the sum of its proper divisors (1).

133617617677 is an equidigital number, since it uses as much as digits as its factorization.

133617617677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4667544, while the sum is 55.

The spelling of 133617617677 in words is "one hundred thirty-three billion, six hundred seventeen million, six hundred seventeen thousand, six hundred seventy-seven".