263598894473 has 2 divisors, whose sum is σ = 263598894474. Its totient is φ = 263598894472.

The previous prime is 263598894467. The next prime is 263598894497. The reversal of 263598894473 is 374498895362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 261870663289 + 1728231184 = 511733^2 + 41572^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-263598894473 is a prime.

It is not a weakly prime, because it can be changed into another prime (263598894413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131799447236 + 131799447237.

It is an arithmetic number, because the mean of its divisors is an integer number (131799447237).

Almost surely, 2^263598894473 is an apocalyptic number.

It is an amenable number.

263598894473 is a deficient number, since it is larger than the sum of its proper divisors (1).

263598894473 is an equidigital number, since it uses as much as digits as its factorization.

263598894473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 313528320, while the sum is 68.

The spelling of 263598894473 in words is "two hundred sixty-three billion, five hundred ninety-eight million, eight hundred ninety-four thousand, four hundred seventy-three".