73018380973 has 2 divisors, whose sum is σ = 73018380974. Its totient is φ = 73018380972.

The previous prime is 73018380949. The next prime is 73018381027. The reversal of 73018380973 is 37908381037.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67268647044 + 5749733929 = 259362^2 + 75827^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73018380973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73018380073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36509190486 + 36509190487.

It is an arithmetic number, because the mean of its divisors is an integer number (36509190487).

Almost surely, 2^73018380973 is an apocalyptic number.

It is an amenable number.

73018380973 is a deficient number, since it is larger than the sum of its proper divisors (1).

73018380973 is an equidigital number, since it uses as much as digits as its factorization.

73018380973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 762048, while the sum is 49.

The spelling of 73018380973 in words is "seventy-three billion, eighteen million, three hundred eighty thousand, nine hundred seventy-three".