89918668129 has 2 divisors, whose sum is σ = 89918668130. Its totient is φ = 89918668128.

The previous prime is 89918668111. The next prime is 89918668171. The reversal of 89918668129 is 92186681998.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53660795904 + 36257872225 = 231648^2 + 190415^2 .

It is a cyclic number.

It is not a de Polignac number, because 89918668129 - 2¹⁷ = 89918537057 is a prime.

It is not a weakly prime, because it can be changed into another prime (89918668109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44959334064 + 44959334065.

It is an arithmetic number, because the mean of its divisors is an integer number (44959334065).

Almost surely, 2^89918668129 is an apocalyptic number.

It is an amenable number.

89918668129 is a deficient number, since it is larger than the sum of its proper divisors (1).

89918668129 is an equidigital number, since it uses as much as digits as its factorization.

89918668129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26873856, while the sum is 67.

The spelling of 89918668129 in words is "eighty-nine billion, nine hundred eighteen million, six hundred sixty-eight thousand, one hundred twenty-nine".