73530778319 has 2 divisors, whose sum is σ = 73530778320. Its totient is φ = 73530778318.

The previous prime is 73530778261. The next prime is 73530778339. The reversal of 73530778319 is 91387703537.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 73530778319 - 2²⁰ = 73529729743 is a prime.

It is a super-2 number, since 2×73530778319² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73530778339) 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, 36765389159 + 36765389160.

It is an arithmetic number, because the mean of its divisors is an integer number (36765389160).

Almost surely, 2^73530778319 is an apocalyptic number.

73530778319 is a deficient number, since it is larger than the sum of its proper divisors (1).

73530778319 is an equidigital number, since it uses as much as digits as its factorization.

73530778319 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3333960, while the sum is 53.

The spelling of 73530778319 in words is "seventy-three billion, five hundred thirty million, seven hundred seventy-eight thousand, three hundred nineteen".