40351371218 has 8 divisors (see below), whose sum is σ = 60529503612. Its totient is φ = 20174870016.

The previous prime is 40351371191. The next prime is 40351371223. The reversal of 40351371218 is 81217315304.

It can be written as a sum of positive squares in 2 ways, for example, as 37984840609 + 2366530609 = 194897^2 + 48647^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 343955 + ... + 446102.

Almost surely, 2^40351371218 is an apocalyptic number.

40351371218 is a deficient number, since it is larger than the sum of its proper divisors (20178132394).

40351371218 is a wasteful number, since it uses less digits than its factorization.

40351371218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815596.

The product of its (nonzero) digits is 20160, while the sum is 35.

The spelling of 40351371218 in words is "forty billion, three hundred fifty-one million, three hundred seventy-one thousand, two hundred eighteen".