6168102581661 has 8 divisors (see below), whose sum is σ = 8240486950080. Its totient is φ = 4103893300512.

The previous prime is 6168102581653. The next prime is 6168102581681. The reversal of 6168102581661 is 1661852018616.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6168102581661 - 2³ = 6168102581653 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6168102581681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2043770056 + ... + 2043773073.

It is an arithmetic number, because the mean of its divisors is an integer number (1030060868760).

Almost surely, 2^{6168102581661} is an apocalyptic number.

It is an amenable number.

6168102581661 is a deficient number, since it is larger than the sum of its proper divisors (2072384368419).

6168102581661 is a wasteful number, since it uses less digits than its factorization.

6168102581661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4087543635.

The product of its (nonzero) digits is 829440, while the sum is 51.

The spelling of 6168102581661 in words is "six trillion, one hundred sixty-eight billion, one hundred two million, five hundred eighty-one thousand, six hundred sixty-one".