135107575216520 has 64 divisors (see below), whose sum is σ = 307010193773040. Its totient is φ = 53506499200000.

The previous prime is 135107575216499. The next prime is 135107575216633. The reversal of 135107575216520 is 25612575701531.

It can be written as a sum of positive squares in 8 ways, for example, as 104574634678276 + 30532940538244 = 10226174^2 + 5525662^2 .

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, 155109734 + ... + 155978346.

Almost surely, 2^{135107575216520} is an apocalyptic number.

135107575216520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135107575216520 is an abundant number, since it is smaller than the sum of its proper divisors (171902618556520).

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

135107575216520 is a wasteful number, since it uses less digits than its factorization.

135107575216520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 907226 (or 907222 counting only the distinct ones).

The product of its (nonzero) digits is 2205000, while the sum is 50.

The spelling of 135107575216520 in words is "one hundred thirty-five trillion, one hundred seven billion, five hundred seventy-five million, two hundred sixteen thousand, five hundred twenty".