9091819091010 has 32 divisors (see below), whose sum is σ = 21844317987072. Its totient is φ = 2421823738880.

The previous prime is 9091819090961. The next prime is 9091819091011. The reversal of 9091819091010 is 101909181909.

It is a happy number.

It is a super-2 number, since 2×9091819091010² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9091819091011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166306719 + ... + 166361378.

It is an arithmetic number, because the mean of its divisors is an integer number (682634937096).

Almost surely, 2^{9091819091010} is an apocalyptic number.

9091819091010 is an abundant number, since it is smaller than the sum of its proper divisors (12752498896062).

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

9091819091010 is a wasteful number, since it uses less digits than its factorization.

9091819091010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332669018.

The product of its (nonzero) digits is 52488, while the sum is 48.

The spelling of 9091819091010 in words is "nine trillion, ninety-one billion, eight hundred nineteen million, ninety-one thousand, ten".