663705249511 has 2 divisors, whose sum is σ = 663705249512. Its totient is φ = 663705249510.

The previous prime is 663705249481. The next prime is 663705249553. The reversal of 663705249511 is 115942507366.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 663705249511 - 2¹³ = 663705241319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (663705246511) 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, 331852624755 + 331852624756.

It is an arithmetic number, because the mean of its divisors is an integer number (331852624756).

Almost surely, 2^663705249511 is an apocalyptic number.

663705249511 is a deficient number, since it is larger than the sum of its proper divisors (1).

663705249511 is an equidigital number, since it uses as much as digits as its factorization.

663705249511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1360800, while the sum is 49.

The spelling of 663705249511 in words is "six hundred sixty-three billion, seven hundred five million, two hundred forty-nine thousand, five hundred eleven".