20304841536 has 140 divisors (see below), whose sum is σ = 68788592928. Its totient is φ = 5801372928.

The previous prime is 20304841483. The next prime is 20304841567. The reversal of 20304841536 is 63514840302.

20304841536 is a `hidden beast` number, since 20 + 3 + 0 + 484 + 153 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 20304841536.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 243486 + ... + 316061.

Almost surely, 2^20304841536 is an apocalyptic number.

It is an amenable number.

20304841536 is an abundant number, since it is smaller than the sum of its proper divisors (48483751392).

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

20304841536 is an equidigital number, since it uses as much as digits as its factorization.

20304841536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559578 (or 559559 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 20304841536 in words is "twenty billion, three hundred four million, eight hundred forty-one thousand, five hundred thirty-six".