263250645653 has 2 divisors, whose sum is σ = 263250645654. Its totient is φ = 263250645652.

The previous prime is 263250645631. The next prime is 263250645667. The reversal of 263250645653 is 356546052362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 262940251729 + 310393924 = 512777^2 + 17618^2 .

It is a cyclic number.

It is not a de Polignac number, because 263250645653 - 2³² = 258955678357 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 263250645598 and 263250645607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263250645613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131625322826 + 131625322827.

It is an arithmetic number, because the mean of its divisors is an integer number (131625322827).

Almost surely, 2^263250645653 is an apocalyptic number.

It is an amenable number.

263250645653 is a deficient number, since it is larger than the sum of its proper divisors (1).

263250645653 is an equidigital number, since it uses as much as digits as its factorization.

263250645653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888000, while the sum is 47.

The spelling of 263250645653 in words is "two hundred sixty-three billion, two hundred fifty million, six hundred forty-five thousand, six hundred fifty-three".