65530556431273 has 2 divisors, whose sum is σ = 65530556431274. Its totient is φ = 65530556431272.

The previous prime is 65530556431181. The next prime is 65530556431303. The reversal of 65530556431273 is 37213465503556.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44800492462489 + 20730063968784 = 6693317^2 + 4553028^2 .

It is a cyclic number.

It is not a de Polignac number, because 65530556431273 - 2¹³ = 65530556423081 is a prime.

It is not a weakly prime, because it can be changed into another prime (65530556411273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32765278215636 + 32765278215637.

It is an arithmetic number, because the mean of its divisors is an integer number (32765278215637).

Almost surely, 2^{65530556431273} is an apocalyptic number.

It is an amenable number.

65530556431273 is a deficient number, since it is larger than the sum of its proper divisors (1).

65530556431273 is an equidigital number, since it uses as much as digits as its factorization.

65530556431273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34020000, while the sum is 55.

The spelling of 65530556431273 in words is "sixty-five trillion, five hundred thirty billion, five hundred fifty-six million, four hundred thirty-one thousand, two hundred seventy-three".