6161886686 has 16 divisors (see below), whose sum is σ = 9634325136. Its totient is φ = 2952930816.

The previous prime is 6161886673. The next prime is 6161886697. The reversal of 6161886686 is 6866881616.

It is a super-2 number, since 2×6161886686² = 75937695062208125192, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 616451 + ... + 626366.

It is an arithmetic number, because the mean of its divisors is an integer number (602145321).

Almost surely, 2^6161886686 is an apocalyptic number.

6161886686 is a deficient number, since it is larger than the sum of its proper divisors (3472438450).

6161886686 is a wasteful number, since it uses less digits than its factorization.

6161886686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1242923.

The product of its digits is 3981312, while the sum is 56.

The square root of 6161886686 is about 78497.6858639795. The cubic root of 6161886686 is about 1833.3184223654.

The spelling of 6161886686 in words is "six billion, one hundred sixty-one million, eight hundred eighty-six thousand, six hundred eighty-six".