40643867212 has 24 divisors (see below), whose sum is σ = 76609860656. Its totient is φ = 18755817408.

The previous prime is 40643867191. The next prime is 40643867219. The reversal of 40643867212 is 21276834604.

It is not an unprimeable number, because it can be changed into a prime (40643867219) 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, 301138 + ... + 414694.

Almost surely, 2^40643867212 is an apocalyptic number.

It is an amenable number.

40643867212 is a deficient number, since it is larger than the sum of its proper divisors (35965993444).

40643867212 is a wasteful number, since it uses less digits than its factorization.

40643867212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120457 (or 120455 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 43.

The spelling of 40643867212 in words is "forty billion, six hundred forty-three million, eight hundred sixty-seven thousand, two hundred twelve".