263073227091009 has 4 divisors (see below), whose sum is σ = 350764302788016. Its totient is φ = 175382151394004.

The previous prime is 263073227090917. The next prime is 263073227091023. The reversal of 263073227091009 is 900190722370362.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-263073227091009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (263073227791009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43845537848499 + ... + 43845537848504.

It is an arithmetic number, because the mean of its divisors is an integer number (87691075697004).

Almost surely, 2^{263073227091009} is an apocalyptic number.

It is an amenable number.

263073227091009 is a deficient number, since it is larger than the sum of its proper divisors (87691075697007).

263073227091009 is an equidigital number, since it uses as much as digits as its factorization.

263073227091009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87691075697006.

The product of its (nonzero) digits is 1714608, while the sum is 51.

The spelling of 263073227091009 in words is "two hundred sixty-three trillion, seventy-three billion, two hundred twenty-seven million, ninety-one thousand, nine".