12158761047 has 4 divisors (see below), whose sum is σ = 16211681400. Its totient is φ = 8105840696.

The previous prime is 12158760931. The next prime is 12158761057. The reversal of 12158761047 is 74016785121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74016785121 = 3 ⋅24672261707.

It is a cyclic number.

It is not a de Polignac number, because 12158761047 - 2¹⁸ = 12158498903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12158761057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2026460172 + ... + 2026460177.

It is an arithmetic number, because the mean of its divisors is an integer number (4052920350).

Almost surely, 2^12158761047 is an apocalyptic number.

12158761047 is a deficient number, since it is larger than the sum of its proper divisors (4052920353).

12158761047 is an equidigital number, since it uses as much as digits as its factorization.

12158761047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4052920352.

The product of its (nonzero) digits is 94080, while the sum is 42.

The spelling of 12158761047 in words is "twelve billion, one hundred fifty-eight million, seven hundred sixty-one thousand, forty-seven".