12785535387 has 12 divisors (see below), whose sum is σ = 18469249344. Its totient is φ = 8523111600.

The previous prime is 12785535383. The next prime is 12785535409. The reversal of 12785535387 is 78353558721.

12785535387 is a `hidden beast` number, since 1 + 2 + 7 + 8 + 553 + 5 + 3 + 87 = 666.

It is not a de Polignac number, because 12785535387 - 2² = 12785535383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12785535383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 124137 + ... + 202437.

It is an arithmetic number, because the mean of its divisors is an integer number (1539104112).

Almost surely, 2^12785535387 is an apocalyptic number.

12785535387 is a deficient number, since it is larger than the sum of its proper divisors (5683713957).

12785535387 is a wasteful number, since it uses less digits than its factorization.

12785535387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96450 (or 96447 counting only the distinct ones).

The product of its digits is 7056000, while the sum is 54.

The spelling of 12785535387 in words is "twelve billion, seven hundred eighty-five million, five hundred thirty-five thousand, three hundred eighty-seven".