263323146240 has 2880 divisors, whose sum is σ = 1301447347200. Its totient is φ = 50164531200.

The previous prime is 263323146223. The next prime is 263323146253. The reversal of 263323146240 is 42641323362.

263323146240 is a `hidden beast` number, since 2 + 6 + 3 + 3 + 23 + 1 + 4 + 624 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (2880).

It is a super-2 number, since 2×263323146240² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 263323146195 and 263323146204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 8494295025 + ... + 8494295055.

It is an arithmetic number, because the mean of its divisors is an integer number (451891440).

Almost surely, 2^263323146240 is an apocalyptic number.

263323146240 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 263323146240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (650723673600).

263323146240 is an abundant number, since it is smaller than the sum of its proper divisors (1038124200960).

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

263323146240 is a wasteful number, since it uses less digits than its factorization.

263323146240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114 (or 78 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 36.

The spelling of 263323146240 in words is "two hundred sixty-three billion, three hundred twenty-three million, one hundred forty-six thousand, two hundred forty".