263641313316 has 48 divisors (see below), whose sum is σ = 653317116480. Its totient is φ = 82461096960.

The previous prime is 263641313311. The next prime is 263641313317. The reversal of 263641313316 is 613313146362.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (263641313311) 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, 1884681 + ... + 2019728.

It is an arithmetic number, because the mean of its divisors is an integer number (13610773260).

Almost surely, 2^263641313316 is an apocalyptic number.

It is an amenable number.

263641313316 is an abundant number, since it is smaller than the sum of its proper divisors (389675803164).

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

263641313316 is a wasteful number, since it uses less digits than its factorization.

263641313316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3904764 (or 3904762 counting only the distinct ones).

The product of its digits is 139968, while the sum is 39.

Adding to 263641313316 its reverse (613313146362), we get a palindrome (876954459678).

The spelling of 263641313316 in words is "two hundred sixty-three billion, six hundred forty-one million, three hundred thirteen thousand, three hundred sixteen".