4012112531205 has 32 divisors (see below), whose sum is σ = 7151464233600. Its totient is φ = 2134147430016.

The previous prime is 4012112531179. The next prime is 4012112531221. The reversal of 4012112531205 is 5021352112104.

It is a happy number.

4012112531205 is a `hidden beast` number, since 4 + 0 + 12 + 112 + 531 + 2 + 0 + 5 = 666.

It is not a de Polignac number, because 4012112531205 - 2²³ = 4012104142597 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 39156424 + ... + 39258753.

It is an arithmetic number, because the mean of its divisors is an integer number (223483257300).

Almost surely, 2^{4012112531205} is an apocalyptic number.

4012112531205 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4012112531205 is a deficient number, since it is larger than the sum of its proper divisors (3139351702395).

4012112531205 is a wasteful number, since it uses less digits than its factorization.

4012112531205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78415570 (or 78415564 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

Adding to 4012112531205 its reverse (5021352112104), we get a palindrome (9033464643309).

The spelling of 4012112531205 in words is "four trillion, twelve billion, one hundred twelve million, five hundred thirty-one thousand, two hundred five".