40208888813 has 2 divisors, whose sum is σ = 40208888814. Its totient is φ = 40208888812.

The previous prime is 40208888789. The next prime is 40208888827. The reversal of 40208888813 is 31888880204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39569962084 + 638926729 = 198922^2 + 25277^2 .

It is a cyclic number.

It is not a de Polignac number, because 40208888813 - 2⁸ = 40208888557 is a prime.

It is a super-3 number, since 3×40208888813³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40208888413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20104444406 + 20104444407.

It is an arithmetic number, because the mean of its divisors is an integer number (20104444407).

Almost surely, 2^40208888813 is an apocalyptic number.

It is an amenable number.

40208888813 is a deficient number, since it is larger than the sum of its proper divisors (1).

40208888813 is an equidigital number, since it uses as much as digits as its factorization.

40208888813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 786432, while the sum is 50.

The spelling of 40208888813 in words is "forty billion, two hundred eight million, eight hundred eighty-eight thousand, eight hundred thirteen".