51013173533503 has 2 divisors, whose sum is σ = 51013173533504. Its totient is φ = 51013173533502.

The previous prime is 51013173533473. The next prime is 51013173533507. The reversal of 51013173533503 is 30533537131015.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51013173533503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51013173533507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25506586766751 + 25506586766752.

It is an arithmetic number, because the mean of its divisors is an integer number (25506586766752).

Almost surely, 2^{51013173533503} is an apocalyptic number.

51013173533503 is a deficient number, since it is larger than the sum of its proper divisors (1).

51013173533503 is an equidigital number, since it uses as much as digits as its factorization.

51013173533503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 212625, while the sum is 40.

The spelling of 51013173533503 in words is "fifty-one trillion, thirteen billion, one hundred seventy-three million, five hundred thirty-three thousand, five hundred three".