20709748941 has 64 divisors (see below), whose sum is σ = 33597849600. Its totient is φ = 11091421440.

The previous prime is 20709748937. The next prime is 20709748949. The reversal of 20709748941 is 14984790702.

It is not a de Polignac number, because 20709748941 - 2² = 20709748937 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20709748949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8631460 + ... + 8633858.

It is an arithmetic number, because the mean of its divisors is an integer number (524966400).

Almost surely, 2^20709748941 is an apocalyptic number.

20709748941 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20709748941 is a deficient number, since it is larger than the sum of its proper divisors (12888100659).

20709748941 is a wasteful number, since it uses less digits than its factorization.

20709748941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2786.

The product of its (nonzero) digits is 1016064, while the sum is 51.

The spelling of 20709748941 in words is "twenty billion, seven hundred nine million, seven hundred forty-eight thousand, nine hundred forty-one".