40040344501 has 4 divisors (see below), whose sum is σ = 41122516012. Its totient is φ = 38958172992.

The previous prime is 40040344499. The next prime is 40040344517. The reversal of 40040344501 is 10544304004.

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

It can be written as a sum of positive squares in 2 ways, for example, as 37999654225 + 2040690276 = 194935^2 + 45174^2 .

It is a cyclic number.

It is not a de Polignac number, because 40040344501 - 2¹ = 40040344499 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 (40040344601) 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, 541085700 + ... + 541085773.

It is an arithmetic number, because the mean of its divisors is an integer number (10280629003).

Almost surely, 2^40040344501 is an apocalyptic number.

It is an amenable number.

40040344501 is a deficient number, since it is larger than the sum of its proper divisors (1082171511).

40040344501 is a wasteful number, since it uses less digits than its factorization.

40040344501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1082171510.

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 40040344501 its reverse (10544304004), we get a palindrome (50584648505).

The spelling of 40040344501 in words is "forty billion, forty million, three hundred forty-four thousand, five hundred one".