2666918256 has 40 divisors (see below), whose sum is σ = 6898903680. Its totient is φ = 887764416.

The previous prime is 2666918249. The next prime is 2666918257. The reversal of 2666918256 is 6528196662.

It is a super-2 number, since 2×2666918256² = 14224905968372163072, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2666918199 and 2666918208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666918257) 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, 1726 + ... + 73053.

It is an arithmetic number, because the mean of its divisors is an integer number (172472592).

Almost surely, 2^2666918256 is an apocalyptic number.

It is an amenable number.

2666918256 is an abundant number, since it is smaller than the sum of its proper divisors (4231985424).

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

2666918256 is a wasteful number, since it uses less digits than its factorization.

2666918256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75533 (or 75527 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 51.

The square root of 2666918256 is about 51642.2138952234. The cubic root of 2666918256 is about 1386.7661579050.

The spelling of 2666918256 in words is "two billion, six hundred sixty-six million, nine hundred eighteen thousand, two hundred fifty-six".