1005611011051 has 4 divisors (see below), whose sum is σ = 1005671075032. Its totient is φ = 1005550947072.

The previous prime is 1005611011039. The next prime is 1005611011081. The reversal of 1005611011051 is 1501101165001.

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

It is a cyclic number.

It is not a de Polignac number, because 1005611011051 - 2⁵ = 1005611011019 is a prime.

It is a super-2 number, since 2×1005611011051² (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 (1005611011081) 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, 30006870 + ... + 30040363.

It is an arithmetic number, because the mean of its divisors is an integer number (251417768758).

Almost surely, 2^{1005611011051} is an apocalyptic number.

1005611011051 is a deficient number, since it is larger than the sum of its proper divisors (60063981).

1005611011051 is an equidigital number, since it uses as much as digits as its factorization.

1005611011051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60063980.

The product of its (nonzero) digits is 150, while the sum is 22.

Adding to 1005611011051 its reverse (1501101165001), we get a palindrome (2506712176052).

The spelling of 1005611011051 in words is "one trillion, five billion, six hundred eleven million, eleven thousand, fifty-one".