40644644466 has 32 divisors (see below), whose sum is σ = 85579704000. Its totient is φ = 12833346240.

The previous prime is 40644644407. The next prime is 40644644471. The reversal of 40644644466 is 66444644604.

40644644466 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 957460 + ... + 999008.

It is an arithmetic number, because the mean of its divisors is an integer number (2674365750).

Almost surely, 2^40644644466 is an apocalyptic number.

40644644466 is an abundant number, since it is smaller than the sum of its proper divisors (44935059534).

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

40644644466 is a wasteful number, since it uses less digits than its factorization.

40644644466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50154.

The product of its (nonzero) digits is 5308416, while the sum is 48.

The spelling of 40644644466 in words is "forty billion, six hundred forty-four million, six hundred forty-four thousand, four hundred sixty-six".