2130556226173 has 2 divisors, whose sum is σ = 2130556226174. Its totient is φ = 2130556226172.

The previous prime is 2130556226147. The next prime is 2130556226207. The reversal of 2130556226173 is 3716226550312.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2063928743044 + 66627483129 = 1436638^2 + 258123^2 .

It is a cyclic number.

It is not a de Polignac number, because 2130556226173 - 2¹³ = 2130556217981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2130556221173) 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 as a sum of consecutive naturals, namely, 1065278113086 + 1065278113087.

It is an arithmetic number, because the mean of its divisors is an integer number (1065278113087).

Almost surely, 2^{2130556226173} is an apocalyptic number.

It is an amenable number.

2130556226173 is a deficient number, since it is larger than the sum of its proper divisors (1).

2130556226173 is an equidigital number, since it uses as much as digits as its factorization.

2130556226173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 453600, while the sum is 43.

The spelling of 2130556226173 in words is "two trillion, one hundred thirty billion, five hundred fifty-six million, two hundred twenty-six thousand, one hundred seventy-three".