2646081868687 has 8 divisors (see below), whose sum is σ = 2906451480960. Its totient is φ = 2397822471000.

The previous prime is 2646081868679. The next prime is 2646081868709. The reversal of 2646081868687 is 7868681806462.

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

It is a cyclic number.

It is not a de Polignac number, because 2646081868687 - 2³ = 2646081868679 is a prime.

It is a super-2 number, since 2×2646081868687² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2646081868487) by changing a digit.

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, 3027553189 + ... + 3027554062.

It is an arithmetic number, because the mean of its divisors is an integer number (363306435120).

Almost surely, 2^{2646081868687} is an apocalyptic number.

2646081868687 is a deficient number, since it is larger than the sum of its proper divisors (260369612273).

2646081868687 is a wasteful number, since it uses less digits than its factorization.

2646081868687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6055107293.

The product of its (nonzero) digits is 297271296, while the sum is 70.

The spelling of 2646081868687 in words is "two trillion, six hundred forty-six billion, eighty-one million, eight hundred sixty-eight thousand, six hundred eighty-seven".