263164424680973 has 2 divisors, whose sum is σ = 263164424680974. Its totient is φ = 263164424680972.

The previous prime is 263164424680897. The next prime is 263164424680991. The reversal of 263164424680973 is 379086424461362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201004398470404 + 62160026210569 = 14177602^2 + 7884163^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-263164424680973 is a prime.

It is a super-2 number, since 2×263164424680973² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263164424620973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131582212340486 + 131582212340487.

It is an arithmetic number, because the mean of its divisors is an integer number (131582212340487).

Almost surely, 2^{263164424680973} is an apocalyptic number.

It is an amenable number.

263164424680973 is a deficient number, since it is larger than the sum of its proper divisors (1).

263164424680973 is an equidigital number, since it uses as much as digits as its factorization.

263164424680973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 250822656, while the sum is 65.

The spelling of 263164424680973 in words is "two hundred sixty-three trillion, one hundred sixty-four billion, four hundred twenty-four million, six hundred eighty thousand, nine hundred seventy-three".