40611838109 has 2 divisors, whose sum is σ = 40611838110. Its totient is φ = 40611838108.

The previous prime is 40611838073. The next prime is 40611838121. The reversal of 40611838109 is 90183811604.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36298632484 + 4313205625 = 190522^2 + 65675^2 .

It is a cyclic number.

It is not a de Polignac number, because 40611838109 - 2⁸ = 40611837853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40611838159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20305919054 + 20305919055.

It is an arithmetic number, because the mean of its divisors is an integer number (20305919055).

Almost surely, 2^40611838109 is an apocalyptic number.

It is an amenable number.

40611838109 is a deficient number, since it is larger than the sum of its proper divisors (1).

40611838109 is an equidigital number, since it uses as much as digits as its factorization.

40611838109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 41.

The spelling of 40611838109 in words is "forty billion, six hundred eleven million, eight hundred thirty-eight thousand, one hundred nine".