40446406662064 has 20 divisors (see below), whose sum is σ = 84392983131856. Its totient is φ = 18667572305472.

The previous prime is 40446406662061. The next prime is 40446406662089. The reversal of 40446406662064 is 46026660464404.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is not an unprimeable number, because it can be changed into a prime (40446406662061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97226938884 + ... + 97226939299.

Almost surely, 2^{40446406662064} is an apocalyptic number.

It is an amenable number.

40446406662064 is an abundant number, since it is smaller than the sum of its proper divisors (43946576469792).

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

40446406662064 is a wasteful number, since it uses less digits than its factorization.

40446406662064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194453878204 (or 194453878198 counting only the distinct ones).

The product of its (nonzero) digits is 15925248, while the sum is 52.

The spelling of 40446406662064 in words is "forty trillion, four hundred forty-six billion, four hundred six million, six hundred sixty-two thousand, sixty-four".