135604390520 has 64 divisors (see below), whose sum is σ = 306817204320. Its totient is φ = 53938522624.

The previous prime is 135604390463. The next prime is 135604390531. The reversal of 135604390520 is 25093406531.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22399814 + ... + 22405866.

Almost surely, 2^135604390520 is an apocalyptic number.

135604390520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135604390520 is an abundant number, since it is smaller than the sum of its proper divisors (171212813800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135604390520 is a wasteful number, since it uses less digits than its factorization.

135604390520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9104 (or 9100 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 38.

The spelling of 135604390520 in words is "one hundred thirty-five billion, six hundred four million, three hundred ninety thousand, five hundred twenty".