40647506173 has 2 divisors, whose sum is σ = 40647506174. Its totient is φ = 40647506172.

The previous prime is 40647506161. The next prime is 40647506201. The reversal of 40647506173 is 37160574604.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40633690084 + 13816089 = 201578^2 + 3717^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40647506173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40647506143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20323753086 + 20323753087.

It is an arithmetic number, because the mean of its divisors is an integer number (20323753087).

Almost surely, 2^40647506173 is an apocalyptic number.

It is an amenable number.

40647506173 is a deficient number, since it is larger than the sum of its proper divisors (1).

40647506173 is an equidigital number, since it uses as much as digits as its factorization.

40647506173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 423360, while the sum is 43.

The spelling of 40647506173 in words is "forty billion, six hundred forty-seven million, five hundred six thousand, one hundred seventy-three".