11930855173 has 2 divisors, whose sum is σ = 11930855174. Its totient is φ = 11930855172.

The previous prime is 11930855161. The next prime is 11930855219. The reversal of 11930855173 is 37155803911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11567647809 + 363207364 = 107553^2 + 19058^2 .

It is a cyclic number.

It is not a de Polignac number, because 11930855173 - 2⁵ = 11930855141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11930853173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5965427586 + 5965427587.

It is an arithmetic number, because the mean of its divisors is an integer number (5965427587).

Almost surely, 2^11930855173 is an apocalyptic number.

It is an amenable number.

11930855173 is a deficient number, since it is larger than the sum of its proper divisors (1).

11930855173 is an equidigital number, since it uses as much as digits as its factorization.

11930855173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 113400, while the sum is 43.

The spelling of 11930855173 in words is "eleven billion, nine hundred thirty million, eight hundred fifty-five thousand, one hundred seventy-three".