128126074057 has 2 divisors, whose sum is σ = 128126074058. Its totient is φ = 128126074056.

The previous prime is 128126074051. The next prime is 128126074093. The reversal of 128126074057 is 750470621821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78992475136 + 49133598921 = 281056^2 + 221661^2 .

It is a cyclic number.

It is not a de Polignac number, because 128126074057 - 2¹⁵ = 128126041289 is a prime.

It is not a weakly prime, because it can be changed into another prime (128126074051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64063037028 + 64063037029.

It is an arithmetic number, because the mean of its divisors is an integer number (64063037029).

Almost surely, 2^128126074057 is an apocalyptic number.

It is an amenable number.

128126074057 is a deficient number, since it is larger than the sum of its proper divisors (1).

128126074057 is an equidigital number, since it uses as much as digits as its factorization.

128126074057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 188160, while the sum is 43.

Adding to 128126074057 its reverse (750470621821), we get a palindrome (878596695878).

The spelling of 128126074057 in words is "one hundred twenty-eight billion, one hundred twenty-six million, seventy-four thousand, fifty-seven".