90090099009009 has 32 divisors (see below), whose sum is σ = 145600756538880. Its totient is φ = 54599836309200.

The previous prime is 90090099008969. The next prime is 90090099009013.

90090099009009 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 90090099009009 - 2¹³ = 90090099000817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90090099009019) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 98644554 + ... + 99553644.

It is an arithmetic number, because the mean of its divisors is an integer number (4550023641840).

Almost surely, 2^{90090099009009} is an apocalyptic number.

90090099009009 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

It is an amenable number.

90090099009009 is a deficient number, since it is larger than the sum of its proper divisors (55510657529871).

90090099009009 is a wasteful number, since it uses less digits than its factorization.

90090099009009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1242778 (or 1242772 counting only the distinct ones).

The product of its (nonzero) digits is 531441, while the sum is 54.

The spelling of 90090099009009 in words is "ninety trillion, ninety billion, ninety-nine million, nine thousand, nine".