40513350181 has 2 divisors, whose sum is σ = 40513350182. Its totient is φ = 40513350180.

The previous prime is 40513350107. The next prime is 40513350203. The reversal of 40513350181 is 18105331504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31410472900 + 9102877281 = 177230^2 + 95409^2 .

It is a cyclic number.

It is not a de Polignac number, because 40513350181 - 2²³ = 40504961573 is a prime.

It is a super-2 number, since 2×40513350181² (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 (40513350481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20256675090 + 20256675091.

It is an arithmetic number, because the mean of its divisors is an integer number (20256675091).

Almost surely, 2^40513350181 is an apocalyptic number.

It is an amenable number.

40513350181 is a deficient number, since it is larger than the sum of its proper divisors (1).

40513350181 is an equidigital number, since it uses as much as digits as its factorization.

40513350181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 31.

Adding to 40513350181 its reverse (18105331504), we get a palindrome (58618681685).

The spelling of 40513350181 in words is "forty billion, five hundred thirteen million, three hundred fifty thousand, one hundred eighty-one".