12084892157861 has 2 divisors, whose sum is σ = 12084892157862. Its totient is φ = 12084892157860.

The previous prime is 12084892157843. The next prime is 12084892157887. The reversal of 12084892157861 is 16875129848021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7748373288100 + 4336518869761 = 2783590^2 + 2082431^2 .

It is a cyclic number.

It is not a de Polignac number, because 12084892157861 - 2⁶ = 12084892157797 is a prime.

It is a super-3 number, since 3×12084892157861³ (a number of 40 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12084892157794 and 12084892157803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12084892157801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6042446078930 + 6042446078931.

It is an arithmetic number, because the mean of its divisors is an integer number (6042446078931).

Almost surely, 2^{12084892157861} is an apocalyptic number.

It is an amenable number.

12084892157861 is a deficient number, since it is larger than the sum of its proper divisors (1).

12084892157861 is an equidigital number, since it uses as much as digits as its factorization.

12084892157861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15482880, while the sum is 62.

The spelling of 12084892157861 in words is "twelve trillion, eighty-four billion, eight hundred ninety-two million, one hundred fifty-seven thousand, eight hundred sixty-one".