40044036671 has 4 divisors (see below), whose sum is σ = 40080342432. Its totient is φ = 40007730912.

The previous prime is 40044036611. The next prime is 40044036677. The reversal of 40044036671 is 17663044004.

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 40044036671 - 2¹⁴ = 40044020287 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 (40044036677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18151226 + ... + 18153431.

It is an arithmetic number, because the mean of its divisors is an integer number (10020085608).

Almost surely, 2^40044036671 is an apocalyptic number.

40044036671 is a deficient number, since it is larger than the sum of its proper divisors (36305761).

40044036671 is a wasteful number, since it uses less digits than its factorization.

40044036671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36305760.

The product of its (nonzero) digits is 48384, while the sum is 35.

The spelling of 40044036671 in words is "forty billion, forty-four million, thirty-six thousand, six hundred seventy-one".