2666420424260 has 24 divisors (see below), whose sum is σ = 5599581371160. Its totient is φ = 1066549411584.

The previous prime is 2666420424257. The next prime is 2666420424277. The reversal of 2666420424260 is 624240246662.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 69017594944 + 2597402829316 = 262712^2 + 1611646^2 .

It is a super-3 number, since 3×2666420424260³ (a number of 38 digits) contains 333 as substring.

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 7 ways as a sum of consecutive naturals, for example, 22952 + ... + 2309408.

It is an arithmetic number, because the mean of its divisors is an integer number (233315890465).

Almost surely, 2^{2666420424260} is an apocalyptic number.

2666420424260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2666420424260 is an abundant number, since it is smaller than the sum of its proper divisors (2933160946900).

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

2666420424260 is a wasteful number, since it uses less digits than its factorization.

2666420424260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2344775 (or 2344773 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 44.

The spelling of 2666420424260 in words is "two trillion, six hundred sixty-six billion, four hundred twenty million, four hundred twenty-four thousand, two hundred sixty".