263250645636 has 48 divisors (see below), whose sum is σ = 676727166528. Its totient is φ = 78983088000.

The previous prime is 263250645631. The next prime is 263250645653. The reversal of 263250645636 is 636546052362.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (263250645631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9859555 + ... + 9886218.

It is an arithmetic number, because the mean of its divisors is an integer number (14098482636).

Almost surely, 2^263250645636 is an apocalyptic number.

It is an amenable number.

263250645636 is an abundant number, since it is smaller than the sum of its proper divisors (413476520892).

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

263250645636 is a wasteful number, since it uses less digits than its factorization.

263250645636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19745892 (or 19745890 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 48.

Adding to 263250645636 its reverse (636546052362), we get a palindrome (899796697998).

The spelling of 263250645636 in words is "two hundred sixty-three billion, two hundred fifty million, six hundred forty-five thousand, six hundred thirty-six".