263244510340 has 96 divisors (see below), whose sum is σ = 637329530880. Its totient is φ = 89464725504.

The previous prime is 263244510323. The next prime is 263244510367. The reversal of 263244510340 is 43015442362.

It is a junction number, because it is equal to n+sod(n) for n = 263244510296 and 263244510305.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21987876 + ... + 21999844.

It is an arithmetic number, because the mean of its divisors is an integer number (6638849280).

Almost surely, 2^263244510340 is an apocalyptic number.

263244510340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 263244510340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (318664765440).

263244510340 is an abundant number, since it is smaller than the sum of its proper divisors (374085020540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

263244510340 is a wasteful number, since it uses less digits than its factorization.

263244510340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13349 (or 13347 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 34.

The spelling of 263244510340 in words is "two hundred sixty-three billion, two hundred forty-four million, five hundred ten thousand, three hundred forty".