791001021110089 has 2 divisors, whose sum is σ = 791001021110090. Its totient is φ = 791001021110088.

The previous prime is 791001021110081. The next prime is 791001021110123. The reversal of 791001021110089 is 980011120100197.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 637482106534464 + 153518914575625 = 25248408^2 + 12390275^2 .

It is an emirp because it is prime and its reverse (980011120100197) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 791001021110089 - 2³ = 791001021110081 is a prime.

It is a super-4 number, since 4×791001021110089⁴ (a number of 61 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (791001021110081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 395500510555044 + 395500510555045.

It is an arithmetic number, because the mean of its divisors is an integer number (395500510555045).

Almost surely, 2^{791001021110089} is an apocalyptic number.

It is an amenable number.

791001021110089 is a deficient number, since it is larger than the sum of its proper divisors (1).

791001021110089 is an equidigital number, since it uses as much as digits as its factorization.

791001021110089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 40.

The spelling of 791001021110089 in words is "seven hundred ninety-one trillion, one billion, twenty-one million, one hundred ten thousand, eighty-nine".