40327641857 has 2 divisors, whose sum is σ = 40327641858. Its totient is φ = 40327641856.

The previous prime is 40327641839. The next prime is 40327641869. The reversal of 40327641857 is 75814672304.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30334840561 + 9992801296 = 174169^2 + 99964^2 .

It is a cyclic number.

It is not a de Polignac number, because 40327641857 - 2⁶ = 40327641793 is a prime.

It is not a weakly prime, because it can be changed into another prime (40327641157) 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, 20163820928 + 20163820929.

It is an arithmetic number, because the mean of its divisors is an integer number (20163820929).

Almost surely, 2^40327641857 is an apocalyptic number.

It is an amenable number.

40327641857 is a deficient number, since it is larger than the sum of its proper divisors (1).

40327641857 is an equidigital number, since it uses as much as digits as its factorization.

40327641857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1128960, while the sum is 47.

The spelling of 40327641857 in words is "forty billion, three hundred twenty-seven million, six hundred forty-one thousand, eight hundred fifty-seven".