263491462093 has 2 divisors, whose sum is σ = 263491462094. Its totient is φ = 263491462092.

The previous prime is 263491462081. The next prime is 263491462127. The reversal of 263491462093 is 390264194362.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 225607900324 + 37883561769 = 474982^2 + 194637^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-263491462093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263491462193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131745731046 + 131745731047.

It is an arithmetic number, because the mean of its divisors is an integer number (131745731047).

Almost surely, 2^263491462093 is an apocalyptic number.

It is an amenable number.

263491462093 is a deficient number, since it is larger than the sum of its proper divisors (1).

263491462093 is an equidigital number, since it uses as much as digits as its factorization.

263491462093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1679616, while the sum is 49.

The spelling of 263491462093 in words is "two hundred sixty-three billion, four hundred ninety-one million, four hundred sixty-two thousand, ninety-three".