90100101010109 has 4 divisors (see below), whose sum is σ = 92017124435904. Its totient is φ = 88183077584316.

The previous prime is 90100101010061. The next prime is 90100101010189. The reversal of 90100101010109 is 90101010100109.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 90100101010109 - 2³² = 90095806042813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90100101010189) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 958511712827 + ... + 958511712920.

It is an arithmetic number, because the mean of its divisors is an integer number (23004281108976).

Almost surely, 2^{90100101010109} is an apocalyptic number.

It is an amenable number.

90100101010109 is a deficient number, since it is larger than the sum of its proper divisors (1917023425795).

90100101010109 is a wasteful number, since it uses less digits than its factorization.

90100101010109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1917023425794.

The product of its (nonzero) digits is 81, while the sum is 23.

The spelling of 90100101010109 in words is "ninety trillion, one hundred billion, one hundred one million, ten thousand, one hundred nine".