1023503509871 has 2 divisors, whose sum is σ = 1023503509872. Its totient is φ = 1023503509870.

The previous prime is 1023503509867. The next prime is 1023503509879. The reversal of 1023503509871 is 1789053053201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1023503509871 - 2² = 1023503509867 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1023503509879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511751754935 + 511751754936.

It is an arithmetic number, because the mean of its divisors is an integer number (511751754936).

Almost surely, 2^{1023503509871} is an apocalyptic number.

1023503509871 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023503509871 is an equidigital number, since it uses as much as digits as its factorization.

1023503509871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 226800, while the sum is 44.

The spelling of 1023503509871 in words is "one trillion, twenty-three billion, five hundred three million, five hundred nine thousand, eight hundred seventy-one".