20305504524 has 48 divisors (see below), whose sum is σ = 47668103168. Its totient is φ = 6727339008.

The previous prime is 20305504523. The next prime is 20305504559. The reversal of 20305504524 is 42540550302.

It is a junction number, because it is equal to n+sod(n) for n = 20305504491 and 20305504500.

It is not an unprimeable number, because it can be changed into a prime (20305504523) 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, 3070029 + ... + 3076635.

Almost surely, 2^20305504524 is an apocalyptic number.

It is an amenable number.

20305504524 is an abundant number, since it is smaller than the sum of its proper divisors (27362598644).

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

20305504524 is a wasteful number, since it uses less digits than its factorization.

20305504524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8134 (or 8132 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 30.

The spelling of 20305504524 in words is "twenty billion, three hundred five million, five hundred four thousand, five hundred twenty-four".