20208684746880 has 1024 divisors, whose sum is σ = 82377577497600. Its totient is φ = 4586471424000.

The previous prime is 20208684746813. The next prime is 20208684746909. The reversal of 20208684746880 is 8864748680202.

20208684746880 is a `hidden beast` number, since 2 + 0 + 2 + 0 + 86 + 8 + 474 + 6 + 8 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 12622538080 + ... + 12622539680.

It is an arithmetic number, because the mean of its divisors is an integer number (80446853025).

Almost surely, 2^{20208684746880} is an apocalyptic number.

20208684746880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20208684746880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41188788748800).

20208684746880 is an abundant number, since it is smaller than the sum of its proper divisors (62168892750720).

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

20208684746880 is a wasteful number, since it uses less digits than its factorization.

20208684746880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2310 (or 2292 counting only the distinct ones).

The product of its (nonzero) digits is 66060288, while the sum is 63.

The spelling of 20208684746880 in words is "twenty trillion, two hundred eight billion, six hundred eighty-four million, seven hundred forty-six thousand, eight hundred eighty".