40206611369 has 2 divisors, whose sum is σ = 40206611370. Its totient is φ = 40206611368.

The previous prime is 40206611329. The next prime is 40206611407. The reversal of 40206611369 is 96311660204.

It is an a-pointer prime, because the next prime (40206611407) can be obtained adding 40206611369 to its sum of digits (38).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38097964969 + 2108646400 = 195187^2 + 45920^2 .

It is a cyclic number.

It is not a de Polignac number, because 40206611369 - 2³² = 35911644073 is a prime.

It is a super-2 number, since 2×40206611369² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40206611309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20103305684 + 20103305685.

It is an arithmetic number, because the mean of its divisors is an integer number (20103305685).

Almost surely, 2^40206611369 is an apocalyptic number.

It is an amenable number.

40206611369 is a deficient number, since it is larger than the sum of its proper divisors (1).

40206611369 is an equidigital number, since it uses as much as digits as its factorization.

40206611369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 38.

The spelling of 40206611369 in words is "forty billion, two hundred six million, six hundred eleven thousand, three hundred sixty-nine".