73573574369 has 2 divisors, whose sum is σ = 73573574370. Its totient is φ = 73573574368.

The previous prime is 73573574339. The next prime is 73573574383. The reversal of 73573574369 is 96347537537.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43207026769 + 30366547600 = 207863^2 + 174260^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73573574369 is a prime.

It is a super-2 number, since 2×73573574369² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (73573574339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36786787184 + 36786787185.

It is an arithmetic number, because the mean of its divisors is an integer number (36786787185).

Almost surely, 2^73573574369 is an apocalyptic number.

It is an amenable number.

73573574369 is a deficient number, since it is larger than the sum of its proper divisors (1).

73573574369 is an equidigital number, since it uses as much as digits as its factorization.

73573574369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50009400, while the sum is 59.

The spelling of 73573574369 in words is "seventy-three billion, five hundred seventy-three million, five hundred seventy-four thousand, three hundred sixty-nine".