263203040868 has 24 divisors (see below), whose sum is σ = 614180275968. Its totient is φ = 87728654496.

The previous prime is 263203040861. The next prime is 263203040897. The reversal of 263203040868 is 868040302362.

It is not an unprimeable number, because it can be changed into a prime (263203040861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 516771 + ... + 890762.

It is an arithmetic number, because the mean of its divisors is an integer number (25590844832).

Almost surely, 2^263203040868 is an apocalyptic number.

It is an amenable number.

263203040868 is an abundant number, since it is smaller than the sum of its proper divisors (350977235100).

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

263203040868 is a wasteful number, since it uses less digits than its factorization.

263203040868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1423123 (or 1423121 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 42.

The spelling of 263203040868 in words is "two hundred sixty-three billion, two hundred three million, forty thousand, eight hundred sixty-eight".