40205046073 has 2 divisors, whose sum is σ = 40205046074. Its totient is φ = 40205046072.

The previous prime is 40205046047. The next prime is 40205046127. The reversal of 40205046073 is 37064050204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35384243449 + 4820802624 = 188107^2 + 69432^2 .

It is a cyclic number.

It is not a de Polignac number, because 40205046073 - 2²¹ = 40202948921 is a prime.

It is not a weakly prime, because it can be changed into another prime (40205016073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20102523036 + 20102523037.

It is an arithmetic number, because the mean of its divisors is an integer number (20102523037).

Almost surely, 2^40205046073 is an apocalyptic number.

It is an amenable number.

40205046073 is a deficient number, since it is larger than the sum of its proper divisors (1).

40205046073 is an equidigital number, since it uses as much as digits as its factorization.

40205046073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 31.

Adding to 40205046073 its reverse (37064050204), we get a palindrome (77269096277).

The spelling of 40205046073 in words is "forty billion, two hundred five million, forty-six thousand, seventy-three".