12054994019989 has 2 divisors, whose sum is σ = 12054994019990. Its totient is φ = 12054994019988.

The previous prime is 12054994019969. The next prime is 12054994020073. The reversal of 12054994019989 is 98991049945021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10708222164964 + 1346771855025 = 3272342^2 + 1160505^2 .

It is a cyclic number.

It is not a de Polignac number, because 12054994019989 - 2³⁹ = 11505238206101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12054994019909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6027497009994 + 6027497009995.

It is an arithmetic number, because the mean of its divisors is an integer number (6027497009995).

Almost surely, 2^{12054994019989} is an apocalyptic number.

It is an amenable number.

12054994019989 is a deficient number, since it is larger than the sum of its proper divisors (1).

12054994019989 is an equidigital number, since it uses as much as digits as its factorization.

12054994019989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75582720, while the sum is 70.

The spelling of 12054994019989 in words is "twelve trillion, fifty-four billion, nine hundred ninety-four million, nineteen thousand, nine hundred eighty-nine".