40210321605 has 16 divisors (see below), whose sum is σ = 64341103680. Its totient is φ = 21443975168.

The previous prime is 40210321583. The next prime is 40210321609. The reversal of 40210321605 is 50612301204.

It is a cyclic number.

It is not a de Polignac number, because 40210321605 - 2⁷ = 40210321477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40210321609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140506 + ... + 316484.

It is an arithmetic number, because the mean of its divisors is an integer number (4021318980).

Almost surely, 2^40210321605 is an apocalyptic number.

It is an amenable number.

40210321605 is a deficient number, since it is larger than the sum of its proper divisors (24130782075).

40210321605 is a wasteful number, since it uses less digits than its factorization.

40210321605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191220.

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 40210321605 its reverse (50612301204), we get a palindrome (90822622809).

The spelling of 40210321605 in words is "forty billion, two hundred ten million, three hundred twenty-one thousand, six hundred five".