12667357973 has 2 divisors, whose sum is σ = 12667357974. Its totient is φ = 12667357972.

The previous prime is 12667357957. The next prime is 12667358009. The reversal of 12667357973 is 37975376621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11738205649 + 929152324 = 108343^2 + 30482^2 .

It is a cyclic number.

It is not a de Polignac number, because 12667357973 - 2⁴ = 12667357957 is a prime.

It is a super-2 number, since 2×12667357973² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12667359973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6333678986 + 6333678987.

It is an arithmetic number, because the mean of its divisors is an integer number (6333678987).

Almost surely, 2^12667357973 is an apocalyptic number.

It is an amenable number.

12667357973 is a deficient number, since it is larger than the sum of its proper divisors (1).

12667357973 is an equidigital number, since it uses as much as digits as its factorization.

12667357973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10001880, while the sum is 56.

The spelling of 12667357973 in words is "twelve billion, six hundred sixty-seven million, three hundred fifty-seven thousand, nine hundred seventy-three".