1263322326550 has 12 divisors (see below), whose sum is σ = 2349779527476. Its totient is φ = 505328930600.

The previous prime is 1263322326521. The next prime is 1263322326551. The reversal of 1263322326550 is 556232233621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1263322326551) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12633223216 + ... + 12633223315.

It is an arithmetic number, because the mean of its divisors is an integer number (195814960623).

Almost surely, 2^{1263322326550} is an apocalyptic number.

1263322326550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1263322326550 is a deficient number, since it is larger than the sum of its proper divisors (1086457200926).

1263322326550 is a wasteful number, since it uses less digits than its factorization.

1263322326550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25266446543 (or 25266446538 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 40.

The spelling of 1263322326550 in words is "one trillion, two hundred sixty-three billion, three hundred twenty-two million, three hundred twenty-six thousand, five hundred fifty".