12536578386 has 16 divisors (see below), whose sum is σ = 27859063200. Its totient is φ = 4178859444.

The previous prime is 12536578367. The next prime is 12536578387. The reversal of 12536578386 is 68387563521.

12536578386 is a `hidden beast` number, since 1 + 2 + 5 + 36 + 578 + 38 + 6 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 232158859 = 12536578386 / (1 + 2 + 5 + 3 + 6 + 5 + 7 + 8 + 3 + 8 + 6).

It is not an unprimeable number, because it can be changed into a prime (12536578387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116079376 + ... + 116079483.

It is an arithmetic number, because the mean of its divisors is an integer number (1741191450).

Almost surely, 2^12536578386 is an apocalyptic number.

12536578386 is an abundant number, since it is smaller than the sum of its proper divisors (15322484814).

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

12536578386 is a wasteful number, since it uses less digits than its factorization.

12536578386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232158870 (or 232158864 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 54.

The spelling of 12536578386 in words is "twelve billion, five hundred thirty-six million, five hundred seventy-eight thousand, three hundred eighty-six".