133873258901 has 2 divisors, whose sum is σ = 133873258902. Its totient is φ = 133873258900.

The previous prime is 133873258873. The next prime is 133873258951. The reversal of 133873258901 is 109852378331.

It is an a-pointer prime, because the next prime (133873258951) can be obtained adding 133873258901 to its sum of digits (50).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121679578276 + 12193680625 = 348826^2 + 110425^2 .

It is a cyclic number.

It is not a de Polignac number, because 133873258901 - 2¹⁰ = 133873257877 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133873258901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133873258951) 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, 66936629450 + 66936629451.

It is an arithmetic number, because the mean of its divisors is an integer number (66936629451).

Almost surely, 2^133873258901 is an apocalyptic number.

It is an amenable number.

133873258901 is a deficient number, since it is larger than the sum of its proper divisors (1).

133873258901 is an equidigital number, since it uses as much as digits as its factorization.

133873258901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The spelling of 133873258901 in words is "one hundred thirty-three billion, eight hundred seventy-three million, two hundred fifty-eight thousand, nine hundred one".