40163631871738 has 8 divisors (see below), whose sum is σ = 60284240759988. Its totient is φ = 20068884951744.

The previous prime is 40163631871723. The next prime is 40163631871777. The reversal of 40163631871738 is 83717813636104.

It can be written as a sum of positive squares in 2 ways, for example, as 27881642014249 + 12281989857489 = 5280307^2 + 3504567^2 .

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

It is a super-2 number, since 2×40163631871738² (a number of 28 digits) contains 22 as substring.

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, 6465488181 + ... + 6465494392.

Almost surely, 2^{40163631871738} is an apocalyptic number.

40163631871738 is a deficient number, since it is larger than the sum of its proper divisors (20120608888250).

40163631871738 is a wasteful number, since it uses less digits than its factorization.

40163631871738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12930984128.

The product of its (nonzero) digits is 12192768, while the sum is 58.

The spelling of 40163631871738 in words is "forty trillion, one hundred sixty-three billion, six hundred thirty-one million, eight hundred seventy-one thousand, seven hundred thirty-eight".