890011011101 has 4 divisors (see below), whose sum is σ = 890413187292. Its totient is φ = 889608834912.

The previous prime is 890011011089. The next prime is 890011011103. The reversal of 890011011101 is 101110110098.

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 554914745476 + 335096265625 = 744926^2 + 578875^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-890011011101 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (890011011103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201084776 + ... + 201089201.

It is an arithmetic number, because the mean of its divisors is an integer number (222603296823).

Almost surely, 2^890011011101 is an apocalyptic number.

It is an amenable number.

890011011101 is a deficient number, since it is larger than the sum of its proper divisors (402176191).

890011011101 is a wasteful number, since it uses less digits than its factorization.

890011011101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402176190.

The product of its (nonzero) digits is 72, while the sum is 23.

Adding to 890011011101 its reverse (101110110098), we get a palindrome (991121121199).

The spelling of 890011011101 in words is "eight hundred ninety billion, eleven million, eleven thousand, one hundred one".