128252998057 has 2 divisors, whose sum is σ = 128252998058. Its totient is φ = 128252998056.

The previous prime is 128252998039. The next prime is 128252998063. The reversal of 128252998057 is 750899252821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81120153856 + 47132844201 = 284816^2 + 217101^2 .

It is a cyclic number.

It is not a de Polignac number, because 128252998057 - 2¹⁵ = 128252965289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 128252997992 and 128252998010.

It is not a weakly prime, because it can be changed into another prime (128252998007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64126499028 + 64126499029.

It is an arithmetic number, because the mean of its divisors is an integer number (64126499029).

Almost surely, 2^128252998057 is an apocalyptic number.

It is an amenable number.

128252998057 is a deficient number, since it is larger than the sum of its proper divisors (1).

128252998057 is an equidigital number, since it uses as much as digits as its factorization.

128252998057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7257600, while the sum is 58.

The spelling of 128252998057 in words is "one hundred twenty-eight billion, two hundred fifty-two million, nine hundred ninety-eight thousand, fifty-seven".