2758866012 has 216 divisors, whose sum is σ = 8651667024. Its totient is φ = 736533504.

The previous prime is 2758866007. The next prime is 2758866037. The reversal of 2758866012 is 2106688572.

2758866012 is a `hidden beast` number, since 2 + 7 + 588 + 6 + 60 + 1 + 2 = 666.

It is a super-2 number, since 2×2758866012² = 15222683344337568288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 5907403 + ... + 5907869.

It is an arithmetic number, because the mean of its divisors is an integer number (40054014).

Almost surely, 2^2758866012 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 2758866012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4325833512).

2758866012 is an abundant number, since it is smaller than the sum of its proper divisors (5892801012).

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

2758866012 is a wasteful number, since it uses less digits than its factorization.

2758866012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705 (or 693 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 2758866012 is about 52524.9084911150. The cubic root of 2758866012 is about 1402.5236813373.

The spelling of 2758866012 in words is "two billion, seven hundred fifty-eight million, eight hundred sixty-six thousand, twelve".