503623663993 has 2 divisors, whose sum is σ = 503623663994. Its totient is φ = 503623663992.

The previous prime is 503623663927. The next prime is 503623664009. The reversal of 503623663993 is 399366326305.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 290620184464 + 213003479529 = 539092^2 + 461523^2 .

It is a cyclic number.

It is not a de Polignac number, because 503623663993 - 2²¹ = 503621566841 is a prime.

It is not a weakly prime, because it can be changed into another prime (503623603993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251811831996 + 251811831997.

It is an arithmetic number, because the mean of its divisors is an integer number (251811831997).

Almost surely, 2^503623663993 is an apocalyptic number.

It is an amenable number.

503623663993 is a deficient number, since it is larger than the sum of its proper divisors (1).

503623663993 is an equidigital number, since it uses as much as digits as its factorization.

503623663993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14171760, while the sum is 55.

The spelling of 503623663993 in words is "five hundred three billion, six hundred twenty-three million, six hundred sixty-three thousand, nine hundred ninety-three".