263944103497 has 2 divisors, whose sum is σ = 263944103498. Its totient is φ = 263944103496.

The previous prime is 263944103453. The next prime is 263944103513. The reversal of 263944103497 is 794301449362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 213757350921 + 50186752576 = 462339^2 + 224024^2 .

It is a cyclic number.

It is not a de Polignac number, because 263944103497 - 2⁷ = 263944103369 is a prime.

It is not a weakly prime, because it can be changed into another prime (263944103447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131972051748 + 131972051749.

It is an arithmetic number, because the mean of its divisors is an integer number (131972051749).

Almost surely, 2^263944103497 is an apocalyptic number.

It is an amenable number.

263944103497 is a deficient number, since it is larger than the sum of its proper divisors (1).

263944103497 is an equidigital number, since it uses as much as digits as its factorization.

263944103497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3919104, while the sum is 52.

The spelling of 263944103497 in words is "two hundred sixty-three billion, nine hundred forty-four million, one hundred three thousand, four hundred ninety-seven".