611066011161 has 4 divisors (see below), whose sum is σ = 814754681552. Its totient is φ = 407377340772.

The previous prime is 611066011099. The next prime is 611066011169. The reversal of 611066011161 is 161110660116.

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 611066011161 - 2⁷ = 611066011033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (611066011169) 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, 101844335191 + ... + 101844335196.

It is an arithmetic number, because the mean of its divisors is an integer number (203688670388).

Almost surely, 2^611066011161 is an apocalyptic number.

It is an amenable number.

611066011161 is a deficient number, since it is larger than the sum of its proper divisors (203688670391).

611066011161 is a wasteful number, since it uses less digits than its factorization.

611066011161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203688670390.

The product of its (nonzero) digits is 1296, while the sum is 30.

Adding to 611066011161 its reverse (161110660116), we get a palindrome (772176671277).

The spelling of 611066011161 in words is "six hundred eleven billion, sixty-six million, eleven thousand, one hundred sixty-one".