40188568556 has 6 divisors (see below), whose sum is σ = 70329994980. Its totient is φ = 20094284276.

The previous prime is 40188568517. The next prime is 40188568559. The reversal of 40188568556 is 65586588104.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (40188568559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5023571066 + ... + 5023571073.

It is an arithmetic number, because the mean of its divisors is an integer number (11721665830).

Almost surely, 2^40188568556 is an apocalyptic number.

It is an amenable number.

40188568556 is a deficient number, since it is larger than the sum of its proper divisors (30141426424).

40188568556 is a wasteful number, since it uses less digits than its factorization.

40188568556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10047142143 (or 10047142141 counting only the distinct ones).

The product of its (nonzero) digits is 9216000, while the sum is 56.

The spelling of 40188568556 in words is "forty billion, one hundred eighty-eight million, five hundred sixty-eight thousand, five hundred fifty-six".