9555505009091 has 2 divisors, whose sum is σ = 9555505009092. Its totient is φ = 9555505009090.

The previous prime is 9555505009051. The next prime is 9555505009153. The reversal of 9555505009091 is 1909005055559.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9555505009091 - 2¹⁰ = 9555505008067 is a prime.

It is not a weakly prime, because it can be changed into another prime (9555505009051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4777752504545 + 4777752504546.

It is an arithmetic number, because the mean of its divisors is an integer number (4777752504546).

Almost surely, 2^{9555505009091} is an apocalyptic number.

9555505009091 is a deficient number, since it is larger than the sum of its proper divisors (1).

9555505009091 is an equidigital number, since it uses as much as digits as its factorization.

9555505009091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2278125, while the sum is 53.

The spelling of 9555505009091 in words is "nine trillion, five hundred fifty-five billion, five hundred five million, nine thousand, ninety-one".