90110001109 has 4 divisors (see below), whose sum is σ = 90287035020. Its totient is φ = 89932967200.

The previous prime is 90110001067. The next prime is 90110001139.

90110001109 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35083163025 + 55026838084 = 187305^2 + 234578^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90110001109 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90110001109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90110001139) 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, 88516192 + ... + 88517209.

It is an arithmetic number, because the mean of its divisors is an integer number (22571758755).

Almost surely, 2^90110001109 is an apocalyptic number.

It is an amenable number.

90110001109 is a deficient number, since it is larger than the sum of its proper divisors (177033911).

90110001109 is a wasteful number, since it uses less digits than its factorization.

90110001109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177033910.

The product of its (nonzero) digits is 81, while the sum is 22.

It can be divided in two parts, 9011000 and 1109, that added together give a palindrome (9012109).

The spelling of 90110001109 in words is "ninety billion, one hundred ten million, one thousand, one hundred nine".