51206265330503 has 2 divisors, whose sum is σ = 51206265330504. Its totient is φ = 51206265330502.

The previous prime is 51206265330499. The next prime is 51206265330589. The reversal of 51206265330503 is 30503356260215.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51206265330503 - 2² = 51206265330499 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51206265330203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25603132665251 + 25603132665252.

It is an arithmetic number, because the mean of its divisors is an integer number (25603132665252).

Almost surely, 2^{51206265330503} is an apocalyptic number.

51206265330503 is a deficient number, since it is larger than the sum of its proper divisors (1).

51206265330503 is an equidigital number, since it uses as much as digits as its factorization.

51206265330503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486000, while the sum is 41.

The spelling of 51206265330503 in words is "fifty-one trillion, two hundred six billion, two hundred sixty-five million, three hundred thirty thousand, five hundred three".