2130128430973 has 2 divisors, whose sum is σ = 2130128430974. Its totient is φ = 2130128430972.

The previous prime is 2130128430917. The next prime is 2130128431001. The reversal of 2130128430973 is 3790348210312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1720223734329 + 409904696644 = 1311573^2 + 640238^2 .

It is a cyclic number.

It is not a de Polignac number, because 2130128430973 - 2⁹ = 2130128430461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2130128430373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065064215486 + 1065064215487.

It is an arithmetic number, because the mean of its divisors is an integer number (1065064215487).

Almost surely, 2^{2130128430973} is an apocalyptic number.

It is an amenable number.

2130128430973 is a deficient number, since it is larger than the sum of its proper divisors (1).

2130128430973 is an equidigital number, since it uses as much as digits as its factorization.

2130128430973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 43.

The spelling of 2130128430973 in words is "two trillion, one hundred thirty billion, one hundred twenty-eight million, four hundred thirty thousand, nine hundred seventy-three".