20620048281 has 32 divisors (see below), whose sum is σ = 33272924160. Its totient is φ = 11095854336.

The previous prime is 20620048279. The next prime is 20620048327. The reversal of 20620048281 is 18284002602.

It is a happy number.

It is not a de Polignac number, because 20620048281 - 2¹ = 20620048279 is a prime.

It is a super-2 number, since 2×20620048281² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20620048201) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 88096 + ... + 221361.

It is an arithmetic number, because the mean of its divisors is an integer number (1039778880).

Almost surely, 2^20620048281 is an apocalyptic number.

20620048281 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20620048281 is a deficient number, since it is larger than the sum of its proper divisors (12652875879).

20620048281 is a wasteful number, since it uses less digits than its factorization.

20620048281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309653.

The product of its (nonzero) digits is 12288, while the sum is 33.

The spelling of 20620048281 in words is "twenty billion, six hundred twenty million, forty-eight thousand, two hundred eighty-one".