135473206531523 has 32 divisors (see below), whose sum is σ = 163085870538240. Its totient is φ = 109933687088640.

The previous prime is 135473206531519. The next prime is 135473206531573. The reversal of 135473206531523 is 325135602374531.

It is a cyclic number.

It is not a de Polignac number, because 135473206531523 - 2² = 135473206531519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135473206531573) 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 31 ways as a sum of consecutive naturals, for example, 2767728536 + ... + 2767777482.

It is an arithmetic number, because the mean of its divisors is an integer number (5096433454320).

Almost surely, 2^{135473206531523} is an apocalyptic number.

135473206531523 is a deficient number, since it is larger than the sum of its proper divisors (27612664006717).

135473206531523 is a wasteful number, since it uses less digits than its factorization.

135473206531523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62667.

The product of its (nonzero) digits is 6804000, while the sum is 50.

The spelling of 135473206531523 in words is "one hundred thirty-five trillion, four hundred seventy-three billion, two hundred six million, five hundred thirty-one thousand, five hundred twenty-three".