40055052109 has 2 divisors, whose sum is σ = 40055052110. Its totient is φ = 40055052108.

The previous prime is 40055052101. The next prime is 40055052157. The reversal of 40055052109 is 90125055004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37860598084 + 2194454025 = 194578^2 + 46845^2 .

It is a cyclic number.

It is not a de Polignac number, because 40055052109 - 2³ = 40055052101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40055052101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20027526054 + 20027526055.

It is an arithmetic number, because the mean of its divisors is an integer number (20027526055).

Almost surely, 2^40055052109 is an apocalyptic number.

It is an amenable number.

40055052109 is a deficient number, since it is larger than the sum of its proper divisors (1).

40055052109 is an equidigital number, since it uses as much as digits as its factorization.

40055052109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9000, while the sum is 31.

The spelling of 40055052109 in words is "forty billion, fifty-five million, fifty-two thousand, one hundred nine".