40743444071 has 4 divisors (see below), whose sum is σ = 44447393544. Its totient is φ = 37039494600.

The previous prime is 40743444059. The next prime is 40743444109. The reversal of 40743444071 is 17044434704.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40743444071 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 (40743444971) 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, 1851974720 + ... + 1851974741.

It is an arithmetic number, because the mean of its divisors is an integer number (11111848386).

Almost surely, 2^40743444071 is an apocalyptic number.

40743444071 is a deficient number, since it is larger than the sum of its proper divisors (3703949473).

40743444071 is a wasteful number, since it uses less digits than its factorization.

40743444071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3703949472.

The product of its (nonzero) digits is 150528, while the sum is 38.

Adding to 40743444071 its reverse (17044434704), we get a palindrome (57787878775).

The spelling of 40743444071 in words is "forty billion, seven hundred forty-three million, four hundred forty-four thousand, seventy-one".