72783482173 has 2 divisors, whose sum is σ = 72783482174. Its totient is φ = 72783482172.

The previous prime is 72783482111. The next prime is 72783482183. The reversal of 72783482173 is 37128438727.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64151771524 + 8631710649 = 253282^2 + 92907^2 .

It is a cyclic number.

It is not a de Polignac number, because 72783482173 - 2¹⁷ = 72783351101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72783482173.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72783482183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36391741086 + 36391741087.

It is an arithmetic number, because the mean of its divisors is an integer number (36391741087).

Almost surely, 2^72783482173 is an apocalyptic number.

It is an amenable number.

72783482173 is a deficient number, since it is larger than the sum of its proper divisors (1).

72783482173 is an equidigital number, since it uses as much as digits as its factorization.

72783482173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3161088, while the sum is 52.

The spelling of 72783482173 in words is "seventy-two billion, seven hundred eighty-three million, four hundred eighty-two thousand, one hundred seventy-three".