128575237911401 has 2 divisors, whose sum is σ = 128575237911402. Its totient is φ = 128575237911400.

The previous prime is 128575237911391. The next prime is 128575237911559. The reversal of 128575237911401 is 104119732575821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109109493911401 + 19465744000000 = 10445549^2 + 4412000^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128575237911401 is a prime.

It is not a weakly prime, because it can be changed into another prime (128575237911101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64287618955700 + 64287618955701.

It is an arithmetic number, because the mean of its divisors is an integer number (64287618955701).

Almost surely, 2^{128575237911401} is an apocalyptic number.

It is an amenable number.

128575237911401 is a deficient number, since it is larger than the sum of its proper divisors (1).

128575237911401 is an equidigital number, since it uses as much as digits as its factorization.

128575237911401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4233600, while the sum is 56.

The spelling of 128575237911401 in words is "one hundred twenty-eight trillion, five hundred seventy-five billion, two hundred thirty-seven million, nine hundred eleven thousand, four hundred one".