2666422606440 has 64 divisors (see below), whose sum is σ = 8000990136000. Its totient is φ = 710892933632.

The previous prime is 2666422606439. The next prime is 2666422606469. The reversal of 2666422606440 is 446062246662.

It is a super-2 number, since 2×2666422606440² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2666422606440.

It is an unprimeable number.

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, 1831902 + ... + 2947661.

It is an arithmetic number, because the mean of its divisors is an integer number (125015470875).

Almost surely, 2^{2666422606440} is an apocalyptic number.

2666422606440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2666422606440 is an abundant number, since it is smaller than the sum of its proper divisors (5334567529560).

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

2666422606440 is a wasteful number, since it uses less digits than its factorization.

2666422606440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4784226 (or 4784222 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 48.

The spelling of 2666422606440 in words is "two trillion, six hundred sixty-six billion, four hundred twenty-two million, six hundred six thousand, four hundred forty".