20455424748 has 120 divisors (see below), whose sum is σ = 58385471760. Its totient is φ = 6193342080.

The previous prime is 20455424713. The next prime is 20455424753. The reversal of 20455424748 is 84742455402.

20455424748 is a `hidden beast` number, since 2 + 0 + 4 + 554 + 24 + 74 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 7030318 + ... + 7033226.

It is an arithmetic number, because the mean of its divisors is an integer number (486545598).

Almost surely, 2^20455424748 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20455424748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29192735880).

20455424748 is an abundant number, since it is smaller than the sum of its proper divisors (37930047012).

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

20455424748 is a wasteful number, since it uses less digits than its factorization.

20455424748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4909 (or 4898 counting only the distinct ones).

The product of its (nonzero) digits is 1433600, while the sum is 45.

The spelling of 20455424748 in words is "twenty billion, four hundred fifty-five million, four hundred twenty-four thousand, seven hundred forty-eight".