12155273667 has 10 divisors (see below), whose sum is σ = 18157878068. Its totient is φ = 8103515724.

The previous prime is 12155273593. The next prime is 12155273687. The reversal of 12155273667 is 76637255121.

It is a happy number.

12155273667 is a `hidden beast` number, since 1 + 2 + 1 + 552 + 7 + 36 + 67 = 666.

It is not a de Polignac number, because 12155273667 - 2¹² = 12155269571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12155273687) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 75032473 + ... + 75032634.

Almost surely, 2^12155273667 is an apocalyptic number.

12155273667 is a deficient number, since it is larger than the sum of its proper divisors (6002604401).

12155273667 is an equidigital number, since it uses as much as digits as its factorization.

12155273667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150065119 (or 150065110 counting only the distinct ones).

The product of its digits is 529200, while the sum is 45.

The spelling of 12155273667 in words is "twelve billion, one hundred fifty-five million, two hundred seventy-three thousand, six hundred sixty-seven".