20469786048 has 280 divisors, whose sum is σ = 62516644080. Its totient is φ = 6618931200.

The previous prime is 20469786017. The next prime is 20469786067. The reversal of 20469786048 is 84068796402.

20469786048 is a `hidden beast` number, since 20 + 4 + 6 + 9 + 7 + 8 + 604 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 20469785985 and 20469786003.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 51046648 + ... + 51047048.

Almost surely, 2^20469786048 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 20469786048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31258322040).

20469786048 is an abundant number, since it is smaller than the sum of its proper divisors (42046858032).

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

20469786048 is a wasteful number, since it uses less digits than its factorization.

20469786048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697 (or 678 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 54.

The spelling of 20469786048 in words is "twenty billion, four hundred sixty-nine million, seven hundred eighty-six thousand, forty-eight".