30851173124437 has 2 divisors, whose sum is σ = 30851173124438. Its totient is φ = 30851173124436.

The previous prime is 30851173124419. The next prime is 30851173124459. The reversal of 30851173124437 is 73442137115803.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22889966647716 + 7961206476721 = 4784346^2 + 2821561^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30851173124437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30851173124137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15425586562218 + 15425586562219.

It is an arithmetic number, because the mean of its divisors is an integer number (15425586562219).

Almost surely, 2^{30851173124437} is an apocalyptic number.

It is an amenable number.

30851173124437 is a deficient number, since it is larger than the sum of its proper divisors (1).

30851173124437 is an equidigital number, since it uses as much as digits as its factorization.

30851173124437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1693440, while the sum is 49.

The spelling of 30851173124437 in words is "thirty trillion, eight hundred fifty-one billion, one hundred seventy-three million, one hundred twenty-four thousand, four hundred thirty-seven".