20835794560 has 64 divisors (see below), whose sum is σ = 56926379520. Its totient is φ = 7143699456.

The previous prime is 20835794557. The next prime is 20835794561. The reversal of 20835794560 is 6549753802.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (20835794561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2320944 + ... + 2329903.

It is an arithmetic number, because the mean of its divisors is an integer number (889474680).

Almost surely, 2^20835794560 is an apocalyptic number.

20835794560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20835794560 is an abundant number, since it is smaller than the sum of its proper divisors (36090584960).

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

20835794560 is an equidigital number, since it uses as much as digits as its factorization.

20835794560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4650873 (or 4650861 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 49.

The spelling of 20835794560 in words is "twenty billion, eight hundred thirty-five million, seven hundred ninety-four thousand, five hundred sixty".