263843123560 has 64 divisors (see below), whose sum is σ = 606671493120. Its totient is φ = 103224706560.

The previous prime is 263843123483. The next prime is 263843123561. The reversal of 263843123560 is 65321348362.

263843123560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×263843123560² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (263843123561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2901180 + ... + 2990740.

It is an arithmetic number, because the mean of its divisors is an integer number (9479242080).

Almost surely, 2^263843123560 is an apocalyptic number.

263843123560 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 263843123560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (303335746560).

263843123560 is an abundant number, since it is smaller than the sum of its proper divisors (342828369560).

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

263843123560 is a wasteful number, since it uses less digits than its factorization.

263843123560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91186 (or 91182 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 43.

The spelling of 263843123560 in words is "two hundred sixty-three billion, eight hundred forty-three million, one hundred twenty-three thousand, five hundred sixty".