263241552326513 has 4 divisors (see below), whose sum is σ = 265797295553088. Its totient is φ = 260685809099940.

The previous prime is 263241552326471. The next prime is 263241552326539. The reversal of 263241552326513 is 315623255142362.

It is a happy number.

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 not a de Polignac number, because 263241552326513 - 2¹⁴ = 263241552310129 is a prime.

It is a super-2 number, since 2×263241552326513² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (263241552326813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1277871613133 + ... + 1277871613338.

It is an arithmetic number, because the mean of its divisors is an integer number (66449323888272).

Almost surely, 2^{263241552326513} is an apocalyptic number.

It is an amenable number.

263241552326513 is a deficient number, since it is larger than the sum of its proper divisors (2555743226575).

263241552326513 is a wasteful number, since it uses less digits than its factorization.

263241552326513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2555743226574.

The product of its digits is 7776000, while the sum is 50.

The spelling of 263241552326513 in words is "two hundred sixty-three trillion, two hundred forty-one billion, five hundred fifty-two million, three hundred twenty-six thousand, five hundred thirteen".