263259039960 has 384 divisors, whose sum is σ = 1036176261120. Its totient is φ = 56588046336.

The previous prime is 263259039959. The next prime is 263259039983. The reversal of 263259039960 is 69930952362.

It is a junction number, because it is equal to n+sod(n) for n = 263259039897 and 263259039906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 97973737 + ... + 97976423.

It is an arithmetic number, because the mean of its divisors is an integer number (2698375680).

Almost surely, 2^263259039960 is an apocalyptic number.

263259039960 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 263259039960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (518088130560).

263259039960 is an abundant number, since it is smaller than the sum of its proper divisors (772917221160).

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

263259039960 is a wasteful number, since it uses less digits than its factorization.

263259039960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5015 (or 5008 counting only the distinct ones).

The product of its (nonzero) digits is 4723920, while the sum is 54.

The spelling of 263259039960 in words is "two hundred sixty-three billion, two hundred fifty-nine million, thirty-nine thousand, nine hundred sixty".