91048443113 has 2 divisors, whose sum is σ = 91048443114. Its totient is φ = 91048443112.

The previous prime is 91048443077. The next prime is 91048443133. The reversal of 91048443113 is 31134484019.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77221740544 + 13826702569 = 277888^2 + 117587^2 .

It is a cyclic number.

It is not a de Polignac number, because 91048443113 - 2¹² = 91048439017 is a prime.

It is not a weakly prime, because it can be changed into another prime (91048443133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45524221556 + 45524221557.

It is an arithmetic number, because the mean of its divisors is an integer number (45524221557).

Almost surely, 2^91048443113 is an apocalyptic number.

It is an amenable number.

91048443113 is a deficient number, since it is larger than the sum of its proper divisors (1).

91048443113 is an equidigital number, since it uses as much as digits as its factorization.

91048443113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 38.

The spelling of 91048443113 in words is "ninety-one billion, forty-eight million, four hundred forty-three thousand, one hundred thirteen".