128875461436213 has 2 divisors, whose sum is σ = 128875461436214. Its totient is φ = 128875461436212.

The previous prime is 128875461436193. The next prime is 128875461436247. The reversal of 128875461436213 is 312634164578821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101775451377924 + 27100010058289 = 10088382^2 + 5205767^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128875461436213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128875461446213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64437730718106 + 64437730718107.

It is an arithmetic number, because the mean of its divisors is an integer number (64437730718107).

Almost surely, 2^{128875461436213} is an apocalyptic number.

It is an amenable number.

128875461436213 is a deficient number, since it is larger than the sum of its proper divisors (1).

128875461436213 is an equidigital number, since it uses as much as digits as its factorization.

128875461436213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46448640, while the sum is 61.

The spelling of 128875461436213 in words is "one hundred twenty-eight trillion, eight hundred seventy-five billion, four hundred sixty-one million, four hundred thirty-six thousand, two hundred thirteen".