135815402403 has 28 divisors (see below), whose sum is σ = 210198694848. Its totient is φ = 87622825680.

The previous prime is 135815402381. The next prime is 135815402413. The reversal of 135815402403 is 304204518531.

135815402403 is a `hidden beast` number, since 1 + 3 + 581 + 54 + 0 + 24 + 0 + 3 = 666.

It is not a de Polignac number, because 135815402403 - 2²⁰ = 135814353827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135815402413) 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 27 ways as a sum of consecutive naturals, for example, 2982300 + ... + 3027497.

Almost surely, 2^135815402403 is an apocalyptic number.

135815402403 is a deficient number, since it is larger than the sum of its proper divisors (74383292445).

135815402403 is an frugal number, since it uses more digits than its factorization.

135815402403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6009846 (or 6009831 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The spelling of 135815402403 in words is "one hundred thirty-five billion, eight hundred fifteen million, four hundred two thousand, four hundred three".