40412113109 has 2 divisors, whose sum is σ = 40412113110. Its totient is φ = 40412113108.

The previous prime is 40412113051. The next prime is 40412113111. The reversal of 40412113109 is 90131121404.

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., 37540225009 + 2871888100 = 193753^2 + 53590^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40412113109 is a prime.

Together with 40412113111, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40412113129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20206056554 + 20206056555.

It is an arithmetic number, because the mean of its divisors is an integer number (20206056555).

Almost surely, 2^40412113109 is an apocalyptic number.

It is an amenable number.

40412113109 is a deficient number, since it is larger than the sum of its proper divisors (1).

40412113109 is an equidigital number, since it uses as much as digits as its factorization.

40412113109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 26.

The spelling of 40412113109 in words is "forty billion, four hundred twelve million, one hundred thirteen thousand, one hundred nine".