135212557385 has 16 divisors (see below), whose sum is σ = 162684364800. Its totient is φ = 107884115136.

The previous prime is 135212557367. The next prime is 135212557387. The reversal of 135212557385 is 583755212531.

It is a cyclic number.

It is not a de Polignac number, because 135212557385 - 2¹⁶ = 135212491849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135212557387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4340696 + ... + 4371734.

It is an arithmetic number, because the mean of its divisors is an integer number (10167772800).

Almost surely, 2^135212557385 is an apocalyptic number.

It is an amenable number.

135212557385 is a deficient number, since it is larger than the sum of its proper divisors (27471807415).

135212557385 is a wasteful number, since it uses less digits than its factorization.

135212557385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33320.

The product of its digits is 1260000, while the sum is 47.

The spelling of 135212557385 in words is "one hundred thirty-five billion, two hundred twelve million, five hundred fifty-seven thousand, three hundred eighty-five".