133685373637 has 2 divisors, whose sum is σ = 133685373638. Its totient is φ = 133685373636.

The previous prime is 133685373589. The next prime is 133685373667. The reversal of 133685373637 is 736373586331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132855876036 + 829497601 = 364494^2 + 28801^2 .

It is a cyclic number.

It is not a de Polignac number, because 133685373637 - 2⁷ = 133685373509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133685373667) 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, 66842686818 + 66842686819.

It is an arithmetic number, because the mean of its divisors is an integer number (66842686819).

Almost surely, 2^133685373637 is an apocalyptic number.

It is an amenable number.

133685373637 is a deficient number, since it is larger than the sum of its proper divisors (1).

133685373637 is an equidigital number, since it uses as much as digits as its factorization.

133685373637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17146080, while the sum is 55.

The spelling of 133685373637 in words is "one hundred thirty-three billion, six hundred eighty-five million, three hundred seventy-three thousand, six hundred thirty-seven".