133545865049 has 2 divisors, whose sum is σ = 133545865050. Its totient is φ = 133545865048.

The previous prime is 133545865043. The next prime is 133545865073. The reversal of 133545865049 is 940568545331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133542739225 + 3125824 = 365435^2 + 1768^2 .

It is a cyclic number.

It is not a de Polignac number, because 133545865049 - 2²⁰ = 133544816473 is a prime.

It is not a weakly prime, because it can be changed into another prime (133545865043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66772932524 + 66772932525.

It is an arithmetic number, because the mean of its divisors is an integer number (66772932525).

Almost surely, 2^133545865049 is an apocalyptic number.

It is an amenable number.

133545865049 is a deficient number, since it is larger than the sum of its proper divisors (1).

133545865049 is an equidigital number, since it uses as much as digits as its factorization.

133545865049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776000, while the sum is 53.

The spelling of 133545865049 in words is "one hundred thirty-three billion, five hundred forty-five million, eight hundred sixty-five thousand, forty-nine".