40040373671 has 4 divisors (see below), whose sum is σ = 40490265600. Its totient is φ = 39590481744.

The previous prime is 40040373641. The next prime is 40040373679. The reversal of 40040373671 is 17637304004.

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

It is a cyclic number.

It is not a de Polignac number, because 40040373671 - 2³⁴ = 22860504487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40040373679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224945831 + ... + 224946008.

It is an arithmetic number, because the mean of its divisors is an integer number (10122566400).

Almost surely, 2^40040373671 is an apocalyptic number.

40040373671 is a deficient number, since it is larger than the sum of its proper divisors (449891929).

40040373671 is an equidigital number, since it uses as much as digits as its factorization.

40040373671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449891928.

The product of its (nonzero) digits is 42336, while the sum is 35.

Adding to 40040373671 its reverse (17637304004), we get a palindrome (57677677675).

The spelling of 40040373671 in words is "forty billion, forty million, three hundred seventy-three thousand, six hundred seventy-one".