6820645434042 has 32 divisors (see below), whose sum is σ = 14881753275840. Its totient is φ = 2066814328320.

The previous prime is 6820645434007. The next prime is 6820645434047. The reversal of 6820645434042 is 2404345460286.

It is a junction number, because it is equal to n+sod(n) for n = 6820645433982 and 6820645434000.

It is not an unprimeable number, because it can be changed into a prime (6820645434047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1723434 + ... + 4075722.

It is an arithmetic number, because the mean of its divisors is an integer number (465054789870).

Almost surely, 2^{6820645434042} is an apocalyptic number.

6820645434042 is an abundant number, since it is smaller than the sum of its proper divisors (8061107841798).

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

6820645434042 is a wasteful number, since it uses less digits than its factorization.

6820645434042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2396238.

The product of its (nonzero) digits is 4423680, while the sum is 48.

The spelling of 6820645434042 in words is "six trillion, eight hundred twenty billion, six hundred forty-five million, four hundred thirty-four thousand, forty-two".