12065621673 has 12 divisors (see below), whose sum is σ = 18714025680. Its totient is φ = 6894640872.

The previous prime is 12065621653. The next prime is 12065621707. The reversal of 12065621673 is 37612656021.

It is not a de Polignac number, because 12065621673 - 2¹³ = 12065613481 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12065621653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41039383 + ... + 41039676.

It is an arithmetic number, because the mean of its divisors is an integer number (1559502140).

Almost surely, 2^12065621673 is an apocalyptic number.

It is an amenable number.

12065621673 is a deficient number, since it is larger than the sum of its proper divisors (6648404007).

12065621673 is an equidigital number, since it uses as much as digits as its factorization.

12065621673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82079076 (or 82079069 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 39.

It can be divided in two parts, 1206562 and 1673, that added together give a triangular number (1208235 = T₁₅₅₄).

The spelling of 12065621673 in words is "twelve billion, sixty-five million, six hundred twenty-one thousand, six hundred seventy-three".