12115671272 has 16 divisors (see below), whose sum is σ = 23500224900. Its totient is φ = 5848944640.

The previous prime is 12115671259. The next prime is 12115671277. The reversal of 12115671272 is 27217651121.

It can be written as a sum of positive squares in 2 ways, for example, as 12072295876 + 43375396 = 109874^2 + 6586^2 .

It is not an unprimeable number, because it can be changed into a prime (12115671277) 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, 26111129 + ... + 26111592.

Almost surely, 2^12115671272 is an apocalyptic number.

It is an amenable number.

12115671272 is a deficient number, since it is larger than the sum of its proper divisors (11384553628).

12115671272 is a wasteful number, since it uses less digits than its factorization.

12115671272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52222756 (or 52222752 counting only the distinct ones).

The product of its digits is 11760, while the sum is 35.

The spelling of 12115671272 in words is "twelve billion, one hundred fifteen million, six hundred seventy-one thousand, two hundred seventy-two".