6161571111 has 4 divisors (see below), whose sum is σ = 8215428152. Its totient is φ = 4107714072.

The previous prime is 6161571037. The next prime is 6161571121. The reversal of 6161571111 is 1111751616.

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

It is not a de Polignac number, because 6161571111 - 2⁹ = 6161570599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6161571121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1026928516 + ... + 1026928521.

It is an arithmetic number, because the mean of its divisors is an integer number (2053857038).

Almost surely, 2^6161571111 is an apocalyptic number.

6161571111 is a deficient number, since it is larger than the sum of its proper divisors (2053857041).

6161571111 is a wasteful number, since it uses less digits than its factorization.

6161571111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2053857040.

The product of its digits is 1260, while the sum is 30.

The square root of 6161571111 is about 78495.6757471391. The cubic root of 6161571111 is about 1833.2871246278.

The spelling of 6161571111 in words is "six billion, one hundred sixty-one million, five hundred seventy-one thousand, one hundred eleven".