40505526169 has 2 divisors, whose sum is σ = 40505526170. Its totient is φ = 40505526168.

The previous prime is 40505526163. The next prime is 40505526203. The reversal of 40505526169 is 96162550504.

40505526169 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36485966169 + 4019560000 = 191013^2 + 63400^2 .

It is a cyclic number.

It is not a de Polignac number, because 40505526169 - 2⁵ = 40505526137 is a prime.

It is a super-2 number, since 2×40505526169² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40505526163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20252763084 + 20252763085.

It is an arithmetic number, because the mean of its divisors is an integer number (20252763085).

Almost surely, 2^40505526169 is an apocalyptic number.

It is an amenable number.

40505526169 is a deficient number, since it is larger than the sum of its proper divisors (1).

40505526169 is an equidigital number, since it uses as much as digits as its factorization.

40505526169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324000, while the sum is 43.

The spelling of 40505526169 in words is "forty billion, five hundred five million, five hundred twenty-six thousand, one hundred sixty-nine".