820472830046 has 4 divisors (see below), whose sum is σ = 1230709245072. Its totient is φ = 410236415022.

The previous prime is 820472830031. The next prime is 820472830091. The reversal of 820472830046 is 640038274028.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 820472829979 and 820472830006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 205118207510 + ... + 205118207513.

It is an arithmetic number, because the mean of its divisors is an integer number (307677311268).

Almost surely, 2^820472830046 is an apocalyptic number.

820472830046 is a deficient number, since it is larger than the sum of its proper divisors (410236415026).

820472830046 is a wasteful number, since it uses less digits than its factorization.

820472830046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410236415025.

The product of its (nonzero) digits is 516096, while the sum is 44.

The spelling of 820472830046 in words is "eight hundred twenty billion, four hundred seventy-two million, eight hundred thirty thousand, forty-six".