135173425203 has 24 divisors (see below), whose sum is σ = 199982811600. Its totient is φ = 87956155584.

The previous prime is 135173425141. The next prime is 135173425213. The reversal of 135173425203 is 302524371531.

135173425203 is a `hidden beast` number, since 13 + 5 + 17 + 3 + 425 + 203 = 666.

It is not a de Polignac number, because 135173425203 - 2²² = 135169230899 is a prime.

It is a super-2 number, since 2×135173425203² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (135173425213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 962568 + ... + 1094021.

It is an arithmetic number, because the mean of its divisors is an integer number (8332617150).

Almost surely, 2^135173425203 is an apocalyptic number.

135173425203 is a deficient number, since it is larger than the sum of its proper divisors (64809386397).

135173425203 is a wasteful number, since it uses less digits than its factorization.

135173425203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2056771 (or 2056768 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 36.

Adding to 135173425203 its reverse (302524371531), we get a palindrome (437697796734).

The spelling of 135173425203 in words is "one hundred thirty-five billion, one hundred seventy-three million, four hundred twenty-five thousand, two hundred three".