263688963012 has 36 divisors (see below), whose sum is σ = 673146586476. Its totient is φ = 87026059200.

The previous prime is 263688962941. The next prime is 263688963037. The reversal of 263688963012 is 210369886362.

It can be written as a sum of positive squares in 2 ways, for example, as 253025096256 + 10663866756 = 503016^2 + 103266^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×263688963012² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 263688963012.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36257223 + ... + 36264494.

It is an arithmetic number, because the mean of its divisors is an integer number (18698516291).

Almost surely, 2^263688963012 is an apocalyptic number.

It is an amenable number.

263688963012 is an abundant number, since it is smaller than the sum of its proper divisors (409457623464).

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

263688963012 is a wasteful number, since it uses less digits than its factorization.

263688963012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72521828 (or 72521823 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 54.

The spelling of 263688963012 in words is "two hundred sixty-three billion, six hundred eighty-eight million, nine hundred sixty-three thousand, twelve".