40402565565212 has 48 divisors (see below), whose sum is σ = 79442558334720. Its totient is φ = 17878078301952.

The previous prime is 40402565565191. The next prime is 40402565565217. The reversal of 40402565565212 is 21256556520404.

40402565565212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40402565565217) by changing a digit.

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, 218830118 + ... + 219014669.

It is an arithmetic number, because the mean of its divisors is an integer number (1655053298640).

Almost surely, 2^{40402565565212} is an apocalyptic number.

It is an amenable number.

40402565565212 is a deficient number, since it is larger than the sum of its proper divisors (39039992769508).

40402565565212 is a wasteful number, since it uses less digits than its factorization.

40402565565212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437844890 (or 437844888 counting only the distinct ones).

The product of its (nonzero) digits is 2880000, while the sum is 47.

The spelling of 40402565565212 in words is "forty trillion, four hundred two billion, five hundred sixty-five million, five hundred sixty-five thousand, two hundred twelve".