40606528664 has 32 divisors (see below), whose sum is σ = 83217756720. Its totient is φ = 18461748096.

The previous prime is 40606528663. The next prime is 40606528673. The reversal of 40606528664 is 46682560604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40606528663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2906819 + ... + 2920754.

Almost surely, 2^40606528664 is an apocalyptic number.

It is an amenable number.

40606528664 is an abundant number, since it is smaller than the sum of its proper divisors (42611228056).

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

40606528664 is a wasteful number, since it uses less digits than its factorization.

40606528664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5827659 (or 5827655 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 47.

The spelling of 40606528664 in words is "forty billion, six hundred six million, five hundred twenty-eight thousand, six hundred sixty-four".