12054789091 has 2 divisors, whose sum is σ = 12054789092. Its totient is φ = 12054789090.

The previous prime is 12054789083. The next prime is 12054789113. The reversal of 12054789091 is 19098745021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12054789091 - 2³ = 12054789083 is a prime.

It is not a weakly prime, because it can be changed into another prime (12054789391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6027394545 + 6027394546.

It is an arithmetic number, because the mean of its divisors is an integer number (6027394546).

Almost surely, 2^12054789091 is an apocalyptic number.

12054789091 is a deficient number, since it is larger than the sum of its proper divisors (1).

12054789091 is an equidigital number, since it uses as much as digits as its factorization.

12054789091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 46.

The spelling of 12054789091 in words is "twelve billion, fifty-four million, seven hundred eighty-nine thousand, ninety-one".