20824286481 has 6 divisors (see below), whose sum is σ = 30079524930. Its totient is φ = 13882857648.

The previous prime is 20824286453. The next prime is 20824286533. The reversal of 20824286481 is 18468242802.

It can be written as a sum of positive squares in only one way, i.e., 13882730625 + 6941555856 = 117825^2 + 83316^2 .

It is not a de Polignac number, because 20824286481 - 2⁵ = 20824286449 is a prime.

It is a super-2 number, since 2×20824286481² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20824286981) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1156904796 + ... + 1156904813.

It is an arithmetic number, because the mean of its divisors is an integer number (5013254155).

Almost surely, 2^20824286481 is an apocalyptic number.

It is an amenable number.

20824286481 is a deficient number, since it is larger than the sum of its proper divisors (9255238449).

20824286481 is a wasteful number, since it uses less digits than its factorization.

20824286481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2313809615 (or 2313809612 counting only the distinct ones).

The product of its (nonzero) digits is 393216, while the sum is 45.

The spelling of 20824286481 in words is "twenty billion, eight hundred twenty-four million, two hundred eighty-six thousand, four hundred eighty-one".