813061682663 has 8 divisors (see below), whose sum is σ = 842329789200. Its totient is φ = 783875675968.

The previous prime is 813061682633. The next prime is 813061682707. The reversal of 813061682663 is 366286160318.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 813061682663 - 2¹² = 813061678567 is a prime.

It is a super-2 number, since 2×813061682663² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813061682633) 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, 20504798 + ... + 20544411.

It is an arithmetic number, because the mean of its divisors is an integer number (105291223650).

Almost surely, 2^813061682663 is an apocalyptic number.

813061682663 is a deficient number, since it is larger than the sum of its proper divisors (29268106537).

813061682663 is a wasteful number, since it uses less digits than its factorization.

813061682663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41049921.

The product of its (nonzero) digits is 1492992, while the sum is 50.

The spelling of 813061682663 in words is "eight hundred thirteen billion, sixty-one million, six hundred eighty-two thousand, six hundred sixty-three".