1000511005061 has 4 divisors (see below), whose sum is σ = 1059364593612. Its totient is φ = 941657416512.

The previous prime is 1000511005037. The next prime is 1000511005141. The reversal of 1000511005061 is 1605001150001.

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 530471872225 + 470039132836 = 728335^2 + 685594^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1000511005061 is a prime.

It is a super-2 number, since 2×1000511005061² (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 (1000511035061) 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, 29426794250 + ... + 29426794283.

It is an arithmetic number, because the mean of its divisors is an integer number (264841148403).

Almost surely, 2^{1000511005061} is an apocalyptic number.

It is an amenable number.

1000511005061 is a deficient number, since it is larger than the sum of its proper divisors (58853588551).

1000511005061 is an equidigital number, since it uses as much as digits as its factorization.

1000511005061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58853588550.

The product of its (nonzero) digits is 150, while the sum is 20.

Adding to 1000511005061 its reverse (1605001150001), we get a palindrome (2605512155062).

The spelling of 1000511005061 in words is "one trillion, five hundred eleven million, five thousand, sixty-one".