1005500111061 has 4 divisors (see below), whose sum is σ = 1340666814752. Its totient is φ = 670333407372.

The previous prime is 1005500111003. The next prime is 1005500111081. The reversal of 1005500111061 is 1601110055001.

It is a happy number.

1005500111061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 1005500111061 - 2¹¹ = 1005500109013 is a prime.

It is a super-2 number, since 2×1005500111061² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1005500111081) 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, 167583351841 + ... + 167583351846.

It is an arithmetic number, because the mean of its divisors is an integer number (335166703688).

Almost surely, 2^{1005500111061} is an apocalyptic number.

It is an amenable number.

1005500111061 is a deficient number, since it is larger than the sum of its proper divisors (335166703691).

1005500111061 is an equidigital number, since it uses as much as digits as its factorization.

1005500111061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335166703690.

The product of its (nonzero) digits is 150, while the sum is 21.

Adding to 1005500111061 its reverse (1601110055001), we get a palindrome (2606610166062).

The spelling of 1005500111061 in words is "one trillion, five billion, five hundred million, one hundred eleven thousand, sixty-one".