40845666558 has 32 divisors (see below), whose sum is σ = 87547009536. Its totient is φ = 12671274528.

The previous prime is 40845666479. The next prime is 40845666593. The reversal of 40845666558 is 85566654804.

It is a junction number, because it is equal to n+sod(n) for n = 40845666498 and 40845666507.

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 15 ways as a sum of consecutive naturals, for example, 3994666 + ... + 4004877.

It is an arithmetic number, because the mean of its divisors is an integer number (2735844048).

Almost surely, 2^40845666558 is an apocalyptic number.

40845666558 is an abundant number, since it is smaller than the sum of its proper divisors (46701342978).

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

40845666558 is a wasteful number, since it uses less digits than its factorization.

40845666558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7999608.

The product of its (nonzero) digits is 27648000, while the sum is 57.

The spelling of 40845666558 in words is "forty billion, eight hundred forty-five million, six hundred sixty-six thousand, five hundred fifty-eight".