12020020146457 has 2 divisors, whose sum is σ = 12020020146458. Its totient is φ = 12020020146456.

The previous prime is 12020020146451. The next prime is 12020020146461. The reversal of 12020020146457 is 75464102002021.

12020020146457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6073952482521 + 5946067663936 = 2464539^2 + 2438456^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12020020146457 is a prime.

It is not a weakly prime, because it can be changed into another prime (12020020146451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010010073228 + 6010010073229.

It is an arithmetic number, because the mean of its divisors is an integer number (6010010073229).

Almost surely, 2^{12020020146457} is an apocalyptic number.

It is an amenable number.

12020020146457 is a deficient number, since it is larger than the sum of its proper divisors (1).

12020020146457 is an equidigital number, since it uses as much as digits as its factorization.

12020020146457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26880, while the sum is 34.

Adding to 12020020146457 its reverse (75464102002021), we get a palindrome (87484122148478).

The spelling of 12020020146457 in words is "twelve trillion, twenty billion, twenty million, one hundred forty-six thousand, four hundred fifty-seven".