40512666252666 has 32 divisors (see below), whose sum is σ = 81817397101440. Its totient is φ = 13372228661184.

The previous prime is 40512666252647. The next prime is 40512666252677. The reversal of 40512666252666 is 66625266621504.

40512666252666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×40512666252666² (a number of 28 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7216680 + ... + 11537148.

It is an arithmetic number, because the mean of its divisors is an integer number (2556793659420).

Almost surely, 2^{40512666252666} is an apocalyptic number.

40512666252666 is an abundant number, since it is smaller than the sum of its proper divisors (41304730848774).

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

40512666252666 is a wasteful number, since it uses less digits than its factorization.

40512666252666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4335750.

The product of its (nonzero) digits is 37324800, while the sum is 57.

The spelling of 40512666252666 in words is "forty trillion, five hundred twelve billion, six hundred sixty-six million, two hundred fifty-two thousand, six hundred sixty-six".