20048791680 has 256 divisors, whose sum is σ = 71167766400. Its totient is φ = 5334183936.

The previous prime is 20048791673. The next prime is 20048791729. The reversal of 20048791680 is 8619784002.

20048791680 is a `hidden beast` number, since 2 + 0 + 0 + 487 + 9 + 168 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9623919 + ... + 9626001.

Almost surely, 2^20048791680 is an apocalyptic number.

20048791680 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 20048791680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35583883200).

20048791680 is an abundant number, since it is smaller than the sum of its proper divisors (51118974720).

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

20048791680 is a wasteful number, since it uses less digits than its factorization.

20048791680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2668 (or 2650 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The spelling of 20048791680 in words is "twenty billion, forty-eight million, seven hundred ninety-one thousand, six hundred eighty".