73558090289 has 2 divisors, whose sum is σ = 73558090290. Its totient is φ = 73558090288.

The previous prime is 73558090253. The next prime is 73558090327. The reversal of 73558090289 is 98209085537.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73181070400 + 377019889 = 270520^2 + 19417^2 .

It is a cyclic number.

It is not a de Polignac number, because 73558090289 - 2²⁰ = 73557041713 is a prime.

It is a super-2 number, since 2×73558090289² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (73558090589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36779045144 + 36779045145.

It is an arithmetic number, because the mean of its divisors is an integer number (36779045145).

Almost surely, 2^73558090289 is an apocalyptic number.

It is an amenable number.

73558090289 is a deficient number, since it is larger than the sum of its proper divisors (1).

73558090289 is an equidigital number, since it uses as much as digits as its factorization.

73558090289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5443200, while the sum is 56.

The spelling of 73558090289 in words is "seventy-three billion, five hundred fifty-eight million, ninety thousand, two hundred eighty-nine".