40350221657173 has 2 divisors, whose sum is σ = 40350221657174. Its totient is φ = 40350221657172.

The previous prime is 40350221657159. The next prime is 40350221657203. The reversal of 40350221657173 is 37175612205304.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20907783685009 + 19442437972164 = 4572503^2 + 4409358^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40350221657173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40350221657143) 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, 20175110828586 + 20175110828587.

It is an arithmetic number, because the mean of its divisors is an integer number (20175110828587).

Almost surely, 2^{40350221657173} is an apocalyptic number.

It is an amenable number.

40350221657173 is a deficient number, since it is larger than the sum of its proper divisors (1).

40350221657173 is an equidigital number, since it uses as much as digits as its factorization.

40350221657173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1058400, while the sum is 46.

The spelling of 40350221657173 in words is "forty trillion, three hundred fifty billion, two hundred twenty-one million, six hundred fifty-seven thousand, one hundred seventy-three".