20831898807039 has 8 divisors (see below), whose sum is σ = 27777263246080. Its totient is φ = 13887233453016.

The previous prime is 20831898807029. The next prime is 20831898807101. The reversal of 20831898807039 is 93070889813802.

It is a happy number.

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

It is not a de Polignac number, because 20831898807039 - 2¹¹ = 20831898804991 is a prime.

It is a super-2 number, since 2×20831898807039² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20831898807029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174701719 + ... + 174820920.

It is an arithmetic number, because the mean of its divisors is an integer number (3472157905760).

Almost surely, 2^{20831898807039} is an apocalyptic number.

20831898807039 is a deficient number, since it is larger than the sum of its proper divisors (6945364439041).

20831898807039 is a wasteful number, since it uses less digits than its factorization.

20831898807039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349542509.

The product of its (nonzero) digits is 41803776, while the sum is 66.

The spelling of 20831898807039 in words is "twenty trillion, eight hundred thirty-one billion, eight hundred ninety-eight million, eight hundred seven thousand, thirty-nine".