12667232305 has 24 divisors (see below), whose sum is σ = 19042613352. Its totient is φ = 8017938432.

The previous prime is 12667232297. The next prime is 12667232371. The reversal of 12667232305 is 50323276621.

It can be written as a sum of positive squares in 4 ways, for example, as 41563809 + 12625668496 = 6447^2 + 112364^2 .

It is not a de Polignac number, because 12667232305 - 2³ = 12667232297 is a prime.

It is a super-2 number, since 2×12667232305² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1985392 + ... + 1991761.

It is an arithmetic number, because the mean of its divisors is an integer number (793442223).

Almost surely, 2^12667232305 is an apocalyptic number.

It is an amenable number.

12667232305 is a deficient number, since it is larger than the sum of its proper divisors (6375381047).

12667232305 is a wasteful number, since it uses less digits than its factorization.

12667232305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3977185 (or 3977178 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 37.

The spelling of 12667232305 in words is "twelve billion, six hundred sixty-seven million, two hundred thirty-two thousand, three hundred five".