40260531149 has 2 divisors, whose sum is σ = 40260531150. Its totient is φ = 40260531148.

The previous prime is 40260531121. The next prime is 40260531161. The reversal of 40260531149 is 94113506204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28140062500 + 12120468649 = 167750^2 + 110093^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40260531149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40260521149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20130265574 + 20130265575.

It is an arithmetic number, because the mean of its divisors is an integer number (20130265575).

Almost surely, 2^40260531149 is an apocalyptic number.

It is an amenable number.

40260531149 is a deficient number, since it is larger than the sum of its proper divisors (1).

40260531149 is an equidigital number, since it uses as much as digits as its factorization.

40260531149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 35.

The spelling of 40260531149 in words is "forty billion, two hundred sixty million, five hundred thirty-one thousand, one hundred forty-nine".