40558764618 has 96 divisors (see below), whose sum is σ = 94028538240. Its totient is φ = 12598364160.

The previous prime is 40558764613. The next prime is 40558764643. The reversal of 40558764618 is 81646785504.

40558764618 is a `hidden beast` number, since 4 + 0 + 5 + 587 + 6 + 46 + 18 = 666.

40558764618 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (40558764613) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5536398 + ... + 5543718.

It is an arithmetic number, because the mean of its divisors is an integer number (979463940).

Almost surely, 2^40558764618 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40558764618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47014269120).

40558764618 is an abundant number, since it is smaller than the sum of its proper divisors (53469773622).

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

40558764618 is a wasteful number, since it uses less digits than its factorization.

40558764618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7612 (or 7609 counting only the distinct ones).

The product of its (nonzero) digits is 6451200, while the sum is 54.

The spelling of 40558764618 in words is "forty billion, five hundred fifty-eight million, seven hundred sixty-four thousand, six hundred eighteen".