20385866452 has 24 divisors (see below), whose sum is σ = 41440125440. Its totient is φ = 8593572960.

The previous prime is 20385866377. The next prime is 20385866471. The reversal of 20385866452 is 25466858302.

It is a junction number, because it is equal to n+sod(n) for n = 20385866396 and 20385866405.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5966052 + ... + 5969467.

Almost surely, 2^20385866452 is an apocalyptic number.

It is an amenable number.

20385866452 is an abundant number, since it is smaller than the sum of its proper divisors (21054258988).

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

20385866452 is a wasteful number, since it uses less digits than its factorization.

20385866452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11935591 (or 11935589 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 49.

The spelling of 20385866452 in words is "twenty billion, three hundred eighty-five million, eight hundred sixty-six thousand, four hundred fifty-two".