263073222639197 has 2 divisors, whose sum is σ = 263073222639198. Its totient is φ = 263073222639196.

The previous prime is 263073222639151. The next prime is 263073222639223. The reversal of 263073222639197 is 791936222370362.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 261623055154756 + 1450167484441 = 16174766^2 + 1204229^2 .

It is a cyclic number.

It is not a de Polignac number, because 263073222639197 - 2⁶ = 263073222639133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263073222633197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131536611319598 + 131536611319599.

It is an arithmetic number, because the mean of its divisors is an integer number (131536611319599).

Almost surely, 2^{263073222639197} is an apocalyptic number.

It is an amenable number.

263073222639197 is a deficient number, since it is larger than the sum of its proper divisors (1).

263073222639197 is an equidigital number, since it uses as much as digits as its factorization.

263073222639197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61725888, while the sum is 62.

The spelling of 263073222639197 in words is "two hundred sixty-three trillion, seventy-three billion, two hundred twenty-two million, six hundred thirty-nine thousand, one hundred ninety-seven".