263750249999 has 2 divisors, whose sum is σ = 263750250000. Its totient is φ = 263750249998.

The previous prime is 263750249989. The next prime is 263750250077. The reversal of 263750249999 is 999942057362.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-263750249999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263750249969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131875124999 + 131875125000.

It is an arithmetic number, because the mean of its divisors is an integer number (131875125000).

Almost surely, 2^263750249999 is an apocalyptic number.

263750249999 is a deficient number, since it is larger than the sum of its proper divisors (1).

263750249999 is an equidigital number, since it uses as much as digits as its factorization.

263750249999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 66134880, while the sum is 65.

The spelling of 263750249999 in words is "two hundred sixty-three billion, seven hundred fifty million, two hundred forty-nine thousand, nine hundred ninety-nine".