12056723989 has 2 divisors, whose sum is σ = 12056723990. Its totient is φ = 12056723988.

The previous prime is 12056723977. The next prime is 12056724041. The reversal of 12056723989 is 98932765021.

It is an a-pointer prime, because the next prime (12056724041) can be obtained adding 12056723989 to its sum of digits (52).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7613435025 + 4443288964 = 87255^2 + 66658^2 .

It is a cyclic number.

It is not a de Polignac number, because 12056723989 - 2⁵ = 12056723957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12056723909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6028361994 + 6028361995.

It is an arithmetic number, because the mean of its divisors is an integer number (6028361995).

Almost surely, 2^12056723989 is an apocalyptic number.

It is an amenable number.

12056723989 is a deficient number, since it is larger than the sum of its proper divisors (1).

12056723989 is an equidigital number, since it uses as much as digits as its factorization.

12056723989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1632960, while the sum is 52.

The spelling of 12056723989 in words is "twelve billion, fifty-six million, seven hundred twenty-three thousand, nine hundred eighty-nine".