40450143529 has 2 divisors, whose sum is σ = 40450143530. Its totient is φ = 40450143528.

The previous prime is 40450143511. The next prime is 40450143557. The reversal of 40450143529 is 92534105404.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25624645929 + 14825497600 = 160077^2 + 121760^2 .

It is a cyclic number.

It is not a de Polignac number, because 40450143529 - 2⁹ = 40450143017 is a prime.

It is a super-2 number, since 2×40450143529² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40450149529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20225071764 + 20225071765.

It is an arithmetic number, because the mean of its divisors is an integer number (20225071765).

Almost surely, 2^40450143529 is an apocalyptic number.

It is an amenable number.

40450143529 is a deficient number, since it is larger than the sum of its proper divisors (1).

40450143529 is an equidigital number, since it uses as much as digits as its factorization.

40450143529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 40450143529 in words is "forty billion, four hundred fifty million, one hundred forty-three thousand, five hundred twenty-nine".