133557543737 has 2 divisors, whose sum is σ = 133557543738. Its totient is φ = 133557543736.

The previous prime is 133557543671. The next prime is 133557543811. The reversal of 133557543737 is 737345755331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132487992121 + 1069551616 = 363989^2 + 32704^2 .

It is a cyclic number.

It is not a de Polignac number, because 133557543737 - 2⁸ = 133557543481 is a prime.

It is not a weakly prime, because it can be changed into another prime (133557593737) 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, 66778771868 + 66778771869.

It is an arithmetic number, because the mean of its divisors is an integer number (66778771869).

Almost surely, 2^133557543737 is an apocalyptic number.

It is an amenable number.

133557543737 is a deficient number, since it is larger than the sum of its proper divisors (1).

133557543737 is an equidigital number, since it uses as much as digits as its factorization.

133557543737 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13891500, while the sum is 53.

The spelling of 133557543737 in words is "one hundred thirty-three billion, five hundred fifty-seven million, five hundred forty-three thousand, seven hundred thirty-seven".