9090910100000 has 72 divisors (see below), whose sum is σ = 22370730001956. Its totient is φ = 3636364000000.

The previous prime is 9090910099981. The next prime is 9090910100039. The reversal of 9090910100000 is 10190909.

It can be written as a sum of positive squares in 6 ways, for example, as 1193888393104 + 7897021706896 = 1092652^2 + 2810164^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45354551 + ... + 45554550.

Almost surely, 2^{9090910100000} is an apocalyptic number.

It is an amenable number.

9090910100000 is an abundant number, since it is smaller than the sum of its proper divisors (13279819901956).

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

9090910100000 is an frugal number, since it uses more digits than its factorization.

9090910100000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90909136 (or 90909108 counting only the distinct ones).

The product of its (nonzero) digits is 729, while the sum is 29.

Adding to 9090910100000 its reverse (10190909), we get a palindrome (9090920290909).

The spelling of 9090910100000 in words is "nine trillion, ninety billion, nine hundred ten million, one hundred thousand".