12158332971 has 16 divisors (see below), whose sum is σ = 16561628160. Its totient is φ = 7932113280.

The previous prime is 12158332961. The next prime is 12158332973. The reversal of 12158332971 is 17923385121.

It is not a de Polignac number, because 12158332971 - 2¹¹ = 12158330923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12158332973) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200215 + ... + 253776.

It is an arithmetic number, because the mean of its divisors is an integer number (1035101760).

Almost surely, 2^12158332971 is an apocalyptic number.

12158332971 is a deficient number, since it is larger than the sum of its proper divisors (4403295189).

12158332971 is a wasteful number, since it uses less digits than its factorization.

12158332971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454186.

The product of its digits is 90720, while the sum is 42.

The spelling of 12158332971 in words is "twelve billion, one hundred fifty-eight million, three hundred thirty-two thousand, nine hundred seventy-one".