40260531121 has 2 divisors, whose sum is σ = 40260531122. Its totient is φ = 40260531120.

The previous prime is 40260531071. The next prime is 40260531149. The reversal of 40260531121 is 12113506204.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40138119025 + 122412096 = 200345^2 + 11064^2 .

It is a cyclic number.

It is not a de Polignac number, because 40260531121 - 2¹⁷ = 40260400049 is a prime.

It is a super-2 number, since 2×40260531121² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40260531161) 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, 20130265560 + 20130265561.

It is an arithmetic number, because the mean of its divisors is an integer number (20130265561).

Almost surely, 2^40260531121 is an apocalyptic number.

It is an amenable number.

40260531121 is a deficient number, since it is larger than the sum of its proper divisors (1).

40260531121 is an equidigital number, since it uses as much as digits as its factorization.

40260531121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 25.

The spelling of 40260531121 in words is "forty billion, two hundred sixty million, five hundred thirty-one thousand, one hundred twenty-one".