128818022093 has 2 divisors, whose sum is σ = 128818022094. Its totient is φ = 128818022092.

The previous prime is 128818022089. The next prime is 128818022101. The reversal of 128818022093 is 390220818821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91631527849 + 37186494244 = 302707^2 + 192838^2 .

It is a cyclic number.

It is not a de Polignac number, because 128818022093 - 2² = 128818022089 is a prime.

It is a super-2 number, since 2×128818022093² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128818022023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64409011046 + 64409011047.

It is an arithmetic number, because the mean of its divisors is an integer number (64409011047).

Almost surely, 2^128818022093 is an apocalyptic number.

It is an amenable number.

128818022093 is a deficient number, since it is larger than the sum of its proper divisors (1).

128818022093 is an equidigital number, since it uses as much as digits as its factorization.

128818022093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 110592, while the sum is 44.

The spelling of 128818022093 in words is "one hundred twenty-eight billion, eight hundred eighteen million, twenty-two thousand, ninety-three".