818291377668 has 192 divisors, whose sum is σ = 2012872716288. Its totient is φ = 258505927680.

The previous prime is 818291377667. The next prime is 818291377679. The reversal of 818291377668 is 866773192818.

818291377668 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 818291377599 and 818291377608.

It is not an unprimeable number, because it can be changed into a prime (818291377667) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 864087571 + ... + 864088517.

It is an arithmetic number, because the mean of its divisors is an integer number (10483712064).

Almost surely, 2^818291377668 is an apocalyptic number.

It is an amenable number.

818291377668 is an abundant number, since it is smaller than the sum of its proper divisors (1194581338620).

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

818291377668 is a wasteful number, since it uses less digits than its factorization.

818291377668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1402 (or 1400 counting only the distinct ones).

The product of its digits is 48771072, while the sum is 66.

The spelling of 818291377668 in words is "eight hundred eighteen billion, two hundred ninety-one million, three hundred seventy-seven thousand, six hundred sixty-eight".