263302920640 has 112 divisors (see below), whose sum is σ = 636211502784. Its totient is φ = 103774003200.

The previous prime is 263302920637. The next prime is 263302920659. The reversal of 263302920640 is 46029203362.

263302920640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 263302920640.

It is a congruent number.

It is an unprimeable number.

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, 57274822 + ... + 57279418.

Almost surely, 2^263302920640 is an apocalyptic number.

263302920640 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 263302920640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (318105751392).

263302920640 is an abundant number, since it is smaller than the sum of its proper divisors (372908582144).

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

263302920640 is a wasteful number, since it uses less digits than its factorization.

263302920640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7206 (or 7196 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 37.

The spelling of 263302920640 in words is "two hundred sixty-three billion, three hundred two million, nine hundred twenty thousand, six hundred forty".