263944103453 has 2 divisors, whose sum is σ = 263944103454. Its totient is φ = 263944103452.

The previous prime is 263944103447. The next prime is 263944103497. The reversal of 263944103453 is 354301449362.

It is an a-pointer prime, because the next prime (263944103497) can be obtained adding 263944103453 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 205207188004 + 58736915449 = 452998^2 + 242357^2 .

It is a cyclic number.

It is not a de Polignac number, because 263944103453 - 2⁸ = 263944103197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263944103443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131972051726 + 131972051727.

It is an arithmetic number, because the mean of its divisors is an integer number (131972051727).

Almost surely, 2^263944103453 is an apocalyptic number.

It is an amenable number.

263944103453 is a deficient number, since it is larger than the sum of its proper divisors (1).

263944103453 is an equidigital number, since it uses as much as digits as its factorization.

263944103453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 933120, while the sum is 44.

The spelling of 263944103453 in words is "two hundred sixty-three billion, nine hundred forty-four million, one hundred three thousand, four hundred fifty-three".