820350427868 has 12 divisors (see below), whose sum is σ = 1481923353792. Its totient is φ = 396943755360.

The previous prime is 820350427859. The next prime is 820350427873. The reversal of 820350427868 is 868724053028.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3307864505 + ... + 3307864752.

It is an arithmetic number, because the mean of its divisors is an integer number (123493612816).

Almost surely, 2^820350427868 is an apocalyptic number.

It is an amenable number.

820350427868 is a deficient number, since it is larger than the sum of its proper divisors (661572925924).

820350427868 is a wasteful number, since it uses less digits than its factorization.

820350427868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6615729292 (or 6615729290 counting only the distinct ones).

The product of its (nonzero) digits is 5160960, while the sum is 53.

The spelling of 820350427868 in words is "eight hundred twenty billion, three hundred fifty million, four hundred twenty-seven thousand, eight hundred sixty-eight".