6161661616 has 40 divisors (see below), whose sum is σ = 13028326848. Its totient is φ = 2799720000.

The previous prime is 6161661607. The next prime is 6161661641.

6161661616 is nontrivially palindromic in base 10.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 673231 + ... + 682321.

Almost surely, 2^6161661616 is an apocalyptic number.

It is an amenable number.

6161661616 is an abundant number, since it is smaller than the sum of its proper divisors (6866665232).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6161661616 is a wasteful number, since it uses less digits than its factorization.

6161661616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12961 (or 12955 counting only the distinct ones).

The product of its digits is 46656, while the sum is 40.

The square root of 6161661616 is about 78496.2522417472. The cubic root of 6161661616 is about 1833.2961007388.

The spelling of 6161661616 in words is "six billion, one hundred sixty-one million, six hundred sixty-one thousand, six hundred sixteen".