40045313533 has 2 divisors, whose sum is σ = 40045313534. Its totient is φ = 40045313532.

The previous prime is 40045313519. The next prime is 40045313551. The reversal of 40045313533 is 33531354004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33166601689 + 6878711844 = 182117^2 + 82938^2 .

It is a cyclic number.

It is not a de Polignac number, because 40045313533 - 2²⁵ = 40011759101 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40045313495 and 40045313504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40045313513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20022656766 + 20022656767.

It is an arithmetic number, because the mean of its divisors is an integer number (20022656767).

Almost surely, 2^40045313533 is an apocalyptic number.

It is an amenable number.

40045313533 is a deficient number, since it is larger than the sum of its proper divisors (1).

40045313533 is an equidigital number, since it uses as much as digits as its factorization.

40045313533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 31.

Adding to 40045313533 its reverse (33531354004), we get a palindrome (73576667537).

The spelling of 40045313533 in words is "forty billion, forty-five million, three hundred thirteen thousand, five hundred thirty-three".