40271167018 has 4 divisors (see below), whose sum is σ = 60406750530. Its totient is φ = 20135583508.

The previous prime is 40271167007. The next prime is 40271167019. The reversal of 40271167018 is 81076117204.

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., 27417729889 + 12853437129 = 165583^2 + 113373^2 .

It is not an unprimeable number, because it can be changed into a prime (40271167019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10067791753 + ... + 10067791756.

Almost surely, 2^40271167018 is an apocalyptic number.

40271167018 is a deficient number, since it is larger than the sum of its proper divisors (20135583512).

40271167018 is a wasteful number, since it uses less digits than its factorization.

40271167018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20135583511.

The product of its (nonzero) digits is 18816, while the sum is 37.

The spelling of 40271167018 in words is "forty billion, two hundred seventy-one million, one hundred sixty-seven thousand, eighteen".