2666768508 has 36 divisors (see below), whose sum is σ = 6990667320. Its totient is φ = 888922512.

The previous prime is 2666768501. The next prime is 2666768519. The reversal of 2666768508 is 8058676662.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×2666768508² = 14223308550521092128, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666768501) 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 11 ways as a sum of consecutive naturals, for example, 1370823 + ... + 1372766.

Almost surely, 2^2666768508 is an apocalyptic number.

It is an amenable number.

2666768508 is an abundant number, since it is smaller than the sum of its proper divisors (4323898812).

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

2666768508 is a wasteful number, since it uses less digits than its factorization.

2666768508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2743608 (or 2743594 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 54.

The square root of 2666768508 is about 51640.7640144876. The cubic root of 2666768508 is about 1386.7402016857.

The spelling of 2666768508 in words is "two billion, six hundred sixty-six million, seven hundred sixty-eight thousand, five hundred eight".