263551643350550 has 48 divisors (see below), whose sum is σ = 520240418388432. Its totient is φ = 98990297856000.

The previous prime is 263551643350537. The next prime is 263551643350559. The reversal of 263551643350550 is 55053346155362.

It is a junction number, because it is equal to n+sod(n) for n = 263551643350492 and 263551643350501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263551643350559) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 357669776 + ... + 358405875.

It is an arithmetic number, because the mean of its divisors is an integer number (10838342049759).

Almost surely, 2^{263551643350550} is an apocalyptic number.

263551643350550 is a deficient number, since it is larger than the sum of its proper divisors (256688775037882).

263551643350550 is a wasteful number, since it uses less digits than its factorization.

263551643350550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 716076113 (or 716076108 counting only the distinct ones).

The product of its (nonzero) digits is 24300000, while the sum is 53.

The spelling of 263551643350550 in words is "two hundred sixty-three trillion, five hundred fifty-one billion, six hundred forty-three million, three hundred fifty thousand, five hundred fifty".