1005101100505 has 4 divisors (see below), whose sum is σ = 1206121320612. Its totient is φ = 804080880400.

The previous prime is 1005101100457. The next prime is 1005101100511. The reversal of 1005101100505 is 5050011015001.

It is a happy number.

1005101100505 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.

It can be written as a sum of positive squares in 2 ways, for example, as 474849162649 + 530251937856 = 689093^2 + 728184^2 .

It is not a de Polignac number, because 1005101100505 - 2¹³ = 1005101092313 is a prime.

It is a super-2 number, since 2×1005101100505² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100510110046 + ... + 100510110055.

It is an arithmetic number, because the mean of its divisors is an integer number (301530330153).

Almost surely, 2^{1005101100505} is an apocalyptic number.

It is an amenable number.

1005101100505 is a deficient number, since it is larger than the sum of its proper divisors (201020220107).

1005101100505 is an equidigital number, since it uses as much as digits as its factorization.

1005101100505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201020220106.

The product of its (nonzero) digits is 125, while the sum is 19.

Adding to 1005101100505 its reverse (5050011015001), we get a palindrome (6055112115506).

The spelling of 1005101100505 in words is "one trillion, five billion, one hundred one million, one hundred thousand, five hundred five".