20833460646 has 32 divisors (see below), whose sum is σ = 42047611008. Its totient is φ = 6881293440.

The previous prime is 20833460623. The next prime is 20833460647. The reversal of 20833460646 is 64606433802.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20833460598 and 20833460607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20833460647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 297981 + ... + 361191.

It is an arithmetic number, because the mean of its divisors is an integer number (1313987844).

Almost surely, 2^20833460646 is an apocalyptic number.

20833460646 is an abundant number, since it is smaller than the sum of its proper divisors (21214150362).

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

20833460646 is a wasteful number, since it uses less digits than its factorization.

20833460646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63716.

The product of its (nonzero) digits is 497664, while the sum is 42.

The spelling of 20833460646 in words is "twenty billion, eight hundred thirty-three million, four hundred sixty thousand, six hundred forty-six".