40605840564 has 24 divisors (see below), whose sum is σ = 94767341760. Its totient is φ = 13532368704.

The previous prime is 40605840503. The next prime is 40605840577. The reversal of 40605840564 is 46504850604.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 305449 + ... + 417744.

It is an arithmetic number, because the mean of its divisors is an integer number (3948639240).

Almost surely, 2^40605840564 is an apocalyptic number.

It is an amenable number.

40605840564 is an abundant number, since it is smaller than the sum of its proper divisors (54161501196).

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

40605840564 is a wasteful number, since it uses less digits than its factorization.

40605840564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727879 (or 727877 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 42.

The spelling of 40605840564 in words is "forty billion, six hundred five million, eight hundred forty thousand, five hundred sixty-four".