9091011009090 has 16 divisors (see below), whose sum is σ = 21818426421888. Its totient is φ = 2424269602416.

The previous prime is 9091011009061. The next prime is 9091011009127. The reversal of 9091011009090 is 909001101909.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151516850122 + ... + 151516850181.

It is an arithmetic number, because the mean of its divisors is an integer number (1363651651368).

Almost surely, 2^{9091011009090} is an apocalyptic number.

9091011009090 is an abundant number, since it is smaller than the sum of its proper divisors (12727415412798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9091011009090 is a wasteful number, since it uses less digits than its factorization.

9091011009090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303033700313.

The product of its (nonzero) digits is 6561, while the sum is 39.

It can be divided in two parts, 909101 and 1009090, that added together give a palindrome (1918191).

The spelling of 9091011009090 in words is "nine trillion, ninety-one billion, eleven million, nine thousand, ninety".