135204251533 has 12 divisors (see below), whose sum is σ = 146455983360. Its totient is φ = 124760125776.

The previous prime is 135204251527. The next prime is 135204251551. The reversal of 135204251533 is 335152402531.

It is not a de Polignac number, because 135204251533 - 2¹³ = 135204243341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135204251563) 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 in 11 ways as a sum of consecutive naturals, for example, 347610 + ... + 625492.

It is an arithmetic number, because the mean of its divisors is an integer number (12204665280).

Almost surely, 2^135204251533 is an apocalyptic number.

135204251533 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

135204251533 is a deficient number, since it is larger than the sum of its proper divisors (11251731827).

135204251533 is a wasteful number, since it uses less digits than its factorization.

135204251533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280788 (or 280775 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 34.

The spelling of 135204251533 in words is "one hundred thirty-five billion, two hundred four million, two hundred fifty-one thousand, five hundred thirty-three".