2578866686312 has 64 divisors (see below), whose sum is σ = 5582744208000. Its totient is φ = 1093926675456.

The previous prime is 2578866686257. The next prime is 2578866686317. The reversal of 2578866686312 is 2136866688752.

It is a super-2 number, since 2×2578866686312² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2578866686317) 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 15 ways as a sum of consecutive naturals, for example, 6574364 + ... + 6955572.

It is an arithmetic number, because the mean of its divisors is an integer number (87230378250).

Almost surely, 2^{2578866686312} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2578866686312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2791372104000).

2578866686312 is an abundant number, since it is smaller than the sum of its proper divisors (3003877521688).

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

2578866686312 is a wasteful number, since it uses less digits than its factorization.

2578866686312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382458 (or 382454 counting only the distinct ones).

The product of its digits is 278691840, while the sum is 68.

The spelling of 2578866686312 in words is "two trillion, five hundred seventy-eight billion, eight hundred sixty-six million, six hundred eighty-six thousand, three hundred twelve".