1005611055051 has 4 divisors (see below), whose sum is σ = 1340814740072. Its totient is φ = 670407370032.

The previous prime is 1005611055049. The next prime is 1005611055121. The reversal of 1005611055051 is 1505501165001.

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

It is not a de Polignac number, because 1005611055051 - 2¹ = 1005611055049 is a prime.

It is a super-2 number, since 2×1005611055051² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1005611055151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167601842506 + ... + 167601842511.

It is an arithmetic number, because the mean of its divisors is an integer number (335203685018).

Almost surely, 2^{1005611055051} is an apocalyptic number.

1005611055051 is a deficient number, since it is larger than the sum of its proper divisors (335203685021).

1005611055051 is an equidigital number, since it uses as much as digits as its factorization.

1005611055051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335203685020.

The product of its (nonzero) digits is 3750, while the sum is 30.

The spelling of 1005611055051 in words is "one trillion, five billion, six hundred eleven million, fifty-five thousand, fifty-one".