20582135823 has 8 divisors (see below), whose sum is σ = 27714559536. Its totient is φ = 13585568000.

The previous prime is 20582135813. The next prime is 20582135837. The reversal of 20582135823 is 32853128502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20582135823 - 2²⁴ = 20565358607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20582135813) 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 7 ways as a sum of consecutive naturals, for example, 33963618 + ... + 33964223.

It is an arithmetic number, because the mean of its divisors is an integer number (3464319942).

Almost surely, 2^20582135823 is an apocalyptic number.

20582135823 is a deficient number, since it is larger than the sum of its proper divisors (7132423713).

20582135823 is a wasteful number, since it uses less digits than its factorization.

20582135823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67927945.

The product of its (nonzero) digits is 115200, while the sum is 39.

The spelling of 20582135823 in words is "twenty billion, five hundred eighty-two million, one hundred thirty-five thousand, eight hundred twenty-three".