820330108456 has 16 divisors (see below), whose sum is σ = 1539082107540. Its totient is φ = 409908213120.

The previous prime is 820330108447. The next prime is 820330108459. The reversal of 820330108456 is 654801033028.

It can be written as a sum of positive squares in 2 ways, for example, as 695332505956 + 124997602500 = 833866^2 + 353550^2 .

It is not an unprimeable number, because it can be changed into a prime (820330108459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32091565 + ... + 32117116.

Almost surely, 2^820330108456 is an apocalyptic number.

It is an amenable number.

820330108456 is a deficient number, since it is larger than the sum of its proper divisors (718751999084).

820330108456 is a wasteful number, since it uses less digits than its factorization.

820330108456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64210284 (or 64210280 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The spelling of 820330108456 in words is "eight hundred twenty billion, three hundred thirty million, one hundred eight thousand, four hundred fifty-six".