20582738837 has 16 divisors (see below), whose sum is σ = 20835329328. Its totient is φ = 20332216320.

The previous prime is 20582738833. The next prime is 20582738857. The reversal of 20582738837 is 73883728502.

It can be written as a sum of positive squares in 8 ways, for example, as 654899281 + 19927839556 = 25591^2 + 141166^2 .

It is a cyclic number.

It is not a de Polignac number, because 20582738837 - 2² = 20582738833 is a prime.

It is a super-3 number, since 3×20582738837³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20582738833) 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 15 ways as a sum of consecutive naturals, for example, 32110037 + ... + 32110677.

It is an arithmetic number, because the mean of its divisors is an integer number (1302208083).

Almost surely, 2^20582738837 is an apocalyptic number.

It is an amenable number.

20582738837 is a deficient number, since it is larger than the sum of its proper divisors (252590491).

20582738837 is a wasteful number, since it uses less digits than its factorization.

20582738837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1720.

The product of its (nonzero) digits is 4515840, while the sum is 53.

The spelling of 20582738837 in words is "twenty billion, five hundred eighty-two million, seven hundred thirty-eight thousand, eight hundred thirty-seven".