40044004501 has 2 divisors, whose sum is σ = 40044004502. Its totient is φ = 40044004500.

The previous prime is 40044004471. The next prime is 40044004589. The reversal of 40044004501 is 10540044004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39422499601 + 621504900 = 198551^2 + 24930^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40044004501 is a prime.

It is a super-2 number, since 2×40044004501² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40044004901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20022002250 + 20022002251.

It is an arithmetic number, because the mean of its divisors is an integer number (20022002251).

Almost surely, 2^40044004501 is an apocalyptic number.

It is an amenable number.

40044004501 is a deficient number, since it is larger than the sum of its proper divisors (1).

40044004501 is an equidigital number, since it uses as much as digits as its factorization.

40044004501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1280, while the sum is 22.

Adding to 40044004501 its reverse (10540044004), we get a palindrome (50584048505).

The spelling of 40044004501 in words is "forty billion, forty-four million, four thousand, five hundred one".