40018188673 has 4 divisors (see below), whose sum is σ = 40019991088. Its totient is φ = 40016386260.

The previous prime is 40018188671. The next prime is 40018188677. The reversal of 40018188673 is 37688181004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40018188673 - 2¹ = 40018188671 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40018188671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 867483 + ... + 912448.

It is an arithmetic number, because the mean of its divisors is an integer number (10004997772).

Almost surely, 2^40018188673 is an apocalyptic number.

It is an amenable number.

40018188673 is a deficient number, since it is larger than the sum of its proper divisors (1802415).

40018188673 is a wasteful number, since it uses less digits than its factorization.

40018188673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1802414.

The product of its (nonzero) digits is 258048, while the sum is 46.

The spelling of 40018188673 in words is "forty billion, eighteen million, one hundred eighty-eight thousand, six hundred seventy-three".