6666736740340 has 24 divisors (see below), whose sum is σ = 14002116808680. Its totient is φ = 2666319523968.

The previous prime is 6666736740329. The next prime is 6666736740347. The reversal of 6666736740340 is 430476376666.

It can be written as a sum of positive squares in 4 ways, for example, as 45244693264 + 6621492047076 = 212708^2 + 2573226^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6666736740347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23302527 + ... + 23586886.

It is an arithmetic number, because the mean of its divisors is an integer number (583421533695).

Almost surely, 2^{6666736740340} is an apocalyptic number.

It is an amenable number.

6666736740340 is an abundant number, since it is smaller than the sum of its proper divisors (7335380068340).

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

6666736740340 is a wasteful number, since it uses less digits than its factorization.

6666736740340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46896531 (or 46896529 counting only the distinct ones).

The product of its (nonzero) digits is 54867456, while the sum is 58.

The spelling of 6666736740340 in words is "six trillion, six hundred sixty-six billion, seven hundred thirty-six million, seven hundred forty thousand, three hundred forty".