2666885071228 has 96 divisors (see below), whose sum is σ = 5601521092608. Its totient is φ = 1086221664000.

The previous prime is 2666885071183. The next prime is 2666885071229. The reversal of 2666885071228 is 8221705886662.

It is a super-3 number, since 3×2666885071228³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666885071229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 329200378 + ... + 329208478.

It is an arithmetic number, because the mean of its divisors is an integer number (58349178048).

Almost surely, 2^{2666885071228} is an apocalyptic number.

2666885071228 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2666885071228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2800760546304).

2666885071228 is an abundant number, since it is smaller than the sum of its proper divisors (2934636021380).

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

2666885071228 is a wasteful number, since it uses less digits than its factorization.

2666885071228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11363 (or 11361 counting only the distinct ones).

The product of its (nonzero) digits is 30965760, while the sum is 61.

The spelling of 2666885071228 in words is "two trillion, six hundred sixty-six billion, eight hundred eighty-five million, seventy-one thousand, two hundred twenty-eight".