128622975831187 has 2 divisors, whose sum is σ = 128622975831188. Its totient is φ = 128622975831186.

The previous prime is 128622975831107. The next prime is 128622975831199. The reversal of 128622975831187 is 781138579226821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128622975831187 - 2²⁷ = 128622841613459 is a prime.

It is not a weakly prime, because it can be changed into another prime (128622975831107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64311487915593 + 64311487915594.

It is an arithmetic number, because the mean of its divisors is an integer number (64311487915594).

Almost surely, 2^{128622975831187} is an apocalyptic number.

128622975831187 is a deficient number, since it is larger than the sum of its proper divisors (1).

128622975831187 is an equidigital number, since it uses as much as digits as its factorization.

128622975831187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 162570240, while the sum is 70.

The spelling of 128622975831187 in words is "one hundred twenty-eight trillion, six hundred twenty-two billion, nine hundred seventy-five million, eight hundred thirty-one thousand, one hundred eighty-seven".