40288919809 has 2 divisors, whose sum is σ = 40288919810. Its totient is φ = 40288919808.

The previous prime is 40288919761. The next prime is 40288919831. The reversal of 40288919809 is 90891988204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20563560000 + 19725359809 = 143400^2 + 140447^2 .

It is a cyclic number.

It is not a de Polignac number, because 40288919809 - 2⁷ = 40288919681 is a prime.

It is not a weakly prime, because it can be changed into another prime (40288916809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20144459904 + 20144459905.

It is an arithmetic number, because the mean of its divisors is an integer number (20144459905).

Almost surely, 2^40288919809 is an apocalyptic number.

It is an amenable number.

40288919809 is a deficient number, since it is larger than the sum of its proper divisors (1).

40288919809 is an equidigital number, since it uses as much as digits as its factorization.

40288919809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2985984, while the sum is 58.

The spelling of 40288919809 in words is "forty billion, two hundred eighty-eight million, nine hundred nineteen thousand, eight hundred nine".