135201439973 has 2 divisors, whose sum is σ = 135201439974. Its totient is φ = 135201439972.

The previous prime is 135201439937. The next prime is 135201440021. The reversal of 135201439973 is 379934102531.

Together with previous prime (135201439937) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109493486404 + 25707953569 = 330898^2 + 160337^2 .

It is a cyclic number.

It is not a de Polignac number, because 135201439973 - 2⁸ = 135201439717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135201439903) 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, 67600719986 + 67600719987.

It is an arithmetic number, because the mean of its divisors is an integer number (67600719987).

Almost surely, 2^135201439973 is an apocalyptic number.

It is an amenable number.

135201439973 is a deficient number, since it is larger than the sum of its proper divisors (1).

135201439973 is an equidigital number, since it uses as much as digits as its factorization.

135201439973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 612360, while the sum is 47.

The spelling of 135201439973 in words is "one hundred thirty-five billion, two hundred one million, four hundred thirty-nine thousand, nine hundred seventy-three".