73702281173 has 2 divisors, whose sum is σ = 73702281174. Its totient is φ = 73702281172.

The previous prime is 73702281119. The next prime is 73702281203. The reversal of 73702281173 is 37118220737.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50293893169 + 23408388004 = 224263^2 + 152998^2 .

It is a cyclic number.

It is not a de Polignac number, because 73702281173 - 2⁸ = 73702280917 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 73702281173.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73702281473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36851140586 + 36851140587.

It is an arithmetic number, because the mean of its divisors is an integer number (36851140587).

Almost surely, 2^73702281173 is an apocalyptic number.

It is an amenable number.

73702281173 is a deficient number, since it is larger than the sum of its proper divisors (1).

73702281173 is an equidigital number, since it uses as much as digits as its factorization.

73702281173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 98784, while the sum is 41.

The spelling of 73702281173 in words is "seventy-three billion, seven hundred two million, two hundred eighty-one thousand, one hundred seventy-three".