51023503361 has 2 divisors, whose sum is σ = 51023503362. Its totient is φ = 51023503360.

The previous prime is 51023503327. The next prime is 51023503397. The reversal of 51023503361 is 16330532015.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49960743361 + 1062760000 = 223519^2 + 32600^2 .

It is a cyclic number.

It is not a de Polignac number, because 51023503361 - 2³⁴ = 33843634177 is a prime.

It is not a weakly prime, because it can be changed into another prime (51023503561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25511751680 + 25511751681.

It is an arithmetic number, because the mean of its divisors is an integer number (25511751681).

Almost surely, 2^51023503361 is an apocalyptic number.

It is an amenable number.

51023503361 is a deficient number, since it is larger than the sum of its proper divisors (1).

51023503361 is an equidigital number, since it uses as much as digits as its factorization.

51023503361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8100, while the sum is 29.

The spelling of 51023503361 in words is "fifty-one billion, twenty-three million, five hundred three thousand, three hundred sixty-one".