20281200280483 has 4 divisors (see below), whose sum is σ = 20297675667808. Its totient is φ = 20264724893160.

The previous prime is 20281200280469. The next prime is 20281200280513. The reversal of 20281200280483 is 38408200218202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20281200280483 is a prime.

It is a super-2 number, since 2×20281200280483² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20281200280423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8237691816 + ... + 8237694277.

It is an arithmetic number, because the mean of its divisors is an integer number (5074418916952).

Almost surely, 2^{20281200280483} is an apocalyptic number.

20281200280483 is a deficient number, since it is larger than the sum of its proper divisors (16475387325).

20281200280483 is a wasteful number, since it uses less digits than its factorization.

20281200280483 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16475387324.

The product of its (nonzero) digits is 98304, while the sum is 40.

Adding to 20281200280483 its reverse (38408200218202), we get a palindrome (58689400498685).

The spelling of 20281200280483 in words is "twenty trillion, two hundred eighty-one billion, two hundred million, two hundred eighty thousand, four hundred eighty-three".