135240757520 has 40 divisors (see below), whose sum is σ = 343019741760. Its totient is φ = 49178456960.

The previous prime is 135240757493. The next prime is 135240757567. The reversal of 135240757520 is 25757042531.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76840460 + ... + 76842219.

It is an arithmetic number, because the mean of its divisors is an integer number (8575493544).

Almost surely, 2^135240757520 is an apocalyptic number.

135240757520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135240757520 is an abundant number, since it is smaller than the sum of its proper divisors (207778984240).

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

135240757520 is a wasteful number, since it uses less digits than its factorization.

135240757520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153682703 (or 153682697 counting only the distinct ones).

The product of its (nonzero) digits is 294000, while the sum is 41.

The spelling of 135240757520 in words is "one hundred thirty-five billion, two hundred forty million, seven hundred fifty-seven thousand, five hundred twenty".