73508554606369 has 3 divisors (see below), whose sum is σ = 73508563180083. Its totient is φ = 73508546032656.

The previous prime is 73508554606367. The next prime is 73508554606433. The reversal of 73508554606369 is 96360645580537.

The square root of 73508554606369 is 8573713.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 73490413749025 + 18140857344 = 8572655^2 + 134688^2 .

It is not a de Polignac number, because 73508554606369 - 2¹ = 73508554606367 is a prime.

It is a super-2 number, since 2×73508554606369² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73508554606367) 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 2 ways as a sum of consecutive naturals, for example, 4286857 + ... + 12860569.

It is an arithmetic number, because the mean of its divisors is an integer number (24502854393361).

Almost surely, 2^{73508554606369} is an apocalyptic number.

73508554606369 is the 8573713-rd square number.

73508554606369 is the 4286857-th centered octagonal number.

It is an amenable number.

73508554606369 is a deficient number, since it is larger than the sum of its proper divisors (8573714).

73508554606369 is an frugal number, since it uses more digits than its factorization.

73508554606369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17147426 (or 8573713 counting only the distinct ones).

The product of its (nonzero) digits is 489888000, while the sum is 67.

The spelling of 73508554606369 in words is "seventy-three trillion, five hundred eight billion, five hundred fifty-four million, six hundred six thousand, three hundred sixty-nine".