73320347557 has 8 divisors (see below), whose sum is σ = 77637381336. Its totient is φ = 69003766272.

The previous prime is 73320347549. The next prime is 73320347561. The reversal of 73320347557 is 75574302337.

It can be written as a sum of positive squares in 4 ways, for example, as 20072939041 + 53247408516 = 141679^2 + 230754^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 73320347557 - 2³ = 73320347549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73320347537) 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 in 7 ways as a sum of consecutive naturals, for example, 254683 + ... + 459895.

It is an arithmetic number, because the mean of its divisors is an integer number (9704672667).

Almost surely, 2^73320347557 is an apocalyptic number.

It is an amenable number.

73320347557 is a deficient number, since it is larger than the sum of its proper divisors (4317033779).

73320347557 is a wasteful number, since it uses less digits than its factorization.

73320347557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226247.

The product of its (nonzero) digits is 1852200, while the sum is 46.

The spelling of 73320347557 in words is "seventy-three billion, three hundred twenty million, three hundred forty-seven thousand, five hundred fifty-seven".