12158472075 has 24 divisors (see below), whose sum is σ = 20214331200. Its totient is φ = 6448284960.

The previous prime is 12158472071. The next prime is 12158472091. The reversal of 12158472075 is 57027485121.

It is not a de Polignac number, because 12158472075 - 2² = 12158472071 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12158472071) 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 23 ways as a sum of consecutive naturals, for example, 439405 + ... + 466254.

It is an arithmetic number, because the mean of its divisors is an integer number (842263800).

Almost surely, 2^12158472075 is an apocalyptic number.

12158472075 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12158472075 is a deficient number, since it is larger than the sum of its proper divisors (8055859125).

12158472075 is a wasteful number, since it uses less digits than its factorization.

12158472075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905851 (or 905846 counting only the distinct ones).

The product of its (nonzero) digits is 156800, while the sum is 42.

The spelling of 12158472075 in words is "twelve billion, one hundred fifty-eight million, four hundred seventy-two thousand, seventy-five".