40000218586 has 4 divisors (see below), whose sum is σ = 60000327882. Its totient is φ = 20000109292.

The previous prime is 40000218553. The next prime is 40000218617. The reversal of 40000218586 is 68581200004.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 28461377025 + 11538841561 = 168705^2 + 107419^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 10000054645 + ... + 10000054648.

Almost surely, 2^40000218586 is an apocalyptic number.

40000218586 is a deficient number, since it is larger than the sum of its proper divisors (20000109296).

40000218586 is a wasteful number, since it uses less digits than its factorization.

40000218586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20000109295.

The product of its (nonzero) digits is 15360, while the sum is 34.

The spelling of 40000218586 in words is "forty billion, two hundred eighteen thousand, five hundred eighty-six".