133940858509 has 2 divisors, whose sum is σ = 133940858510. Its totient is φ = 133940858508.

The previous prime is 133940858479. The next prime is 133940858531. The reversal of 133940858509 is 905858049331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125549748900 + 8391109609 = 354330^2 + 91603^2 .

It is a cyclic number.

It is not a de Polignac number, because 133940858509 - 2²¹ = 133938761357 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133940858509.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133943858509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66970429254 + 66970429255.

It is an arithmetic number, because the mean of its divisors is an integer number (66970429255).

Almost surely, 2^133940858509 is an apocalyptic number.

It is an amenable number.

133940858509 is a deficient number, since it is larger than the sum of its proper divisors (1).

133940858509 is an equidigital number, since it uses as much as digits as its factorization.

133940858509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4665600, while the sum is 55.

The spelling of 133940858509 in words is "one hundred thirty-three billion, nine hundred forty million, eight hundred fifty-eight thousand, five hundred nine".