40019771089 has 2 divisors, whose sum is σ = 40019771090. Its totient is φ = 40019771088.

The previous prime is 40019771053. The next prime is 40019771107. The reversal of 40019771089 is 98017791004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39478510864 + 541260225 = 198692^2 + 23265^2 .

It is a cyclic number.

It is not a de Polignac number, because 40019771089 - 2⁷ = 40019770961 is a prime.

It is not a weakly prime, because it can be changed into another prime (40019771039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20009885544 + 20009885545.

It is an arithmetic number, because the mean of its divisors is an integer number (20009885545).

Almost surely, 2^40019771089 is an apocalyptic number.

It is an amenable number.

40019771089 is a deficient number, since it is larger than the sum of its proper divisors (1).

40019771089 is an equidigital number, since it uses as much as digits as its factorization.

40019771089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127008, while the sum is 46.

The spelling of 40019771089 in words is "forty billion, nineteen million, seven hundred seventy-one thousand, eighty-nine".