9091033856845 has 4 divisors (see below), whose sum is σ = 10909240628220. Its totient is φ = 7272827085472.

The previous prime is 9091033856761. The next prime is 9091033856867. The reversal of 9091033856845 is 5486583301909.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1155511052809 + 7935522804036 = 1074947^2 + 2817006^2 .

It is a cyclic number.

It is not a de Polignac number, because 9091033856845 - 2¹⁵ = 9091033824077 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 909103385680 + ... + 909103385689.

It is an arithmetic number, because the mean of its divisors is an integer number (2727310157055).

Almost surely, 2^{9091033856845} is an apocalyptic number.

It is an amenable number.

9091033856845 is a deficient number, since it is larger than the sum of its proper divisors (1818206771375).

9091033856845 is a wasteful number, since it uses less digits than its factorization.

9091033856845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1818206771374.

The product of its (nonzero) digits is 27993600, while the sum is 61.

The spelling of 9091033856845 in words is "nine trillion, ninety-one billion, thirty-three million, eight hundred fifty-six thousand, eight hundred forty-five".