20454785052 has 24 divisors (see below), whose sum is σ = 51399203856. Its totient is φ = 6293779968.

The previous prime is 20454785051. The next prime is 20454785119. The reversal of 20454785052 is 25058745402.

It is a junction number, because it is equal to n+sod(n) for n = 20454784995 and 20454785013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20454785051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65560053 + ... + 65560364.

It is an arithmetic number, because the mean of its divisors is an integer number (2141633494).

Almost surely, 2^20454785052 is an apocalyptic number.

It is an amenable number.

20454785052 is an abundant number, since it is smaller than the sum of its proper divisors (30944418804).

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

20454785052 is a wasteful number, since it uses less digits than its factorization.

20454785052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131120437 (or 131120435 counting only the distinct ones).

The product of its (nonzero) digits is 448000, while the sum is 42.

The spelling of 20454785052 in words is "twenty billion, four hundred fifty-four million, seven hundred eighty-five thousand, fifty-two".