83789431681 has 8 divisors (see below), whose sum is σ = 85314967200. Its totient is φ = 82267408800.

The previous prime is 83789431679. The next prime is 83789431699. The reversal of 83789431681 is 18613498738.

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 83789431681 - 2¹ = 83789431679 is a prime.

It is a super-2 number, since 2×83789431681² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83789431631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 829995 + ... + 925456.

It is an arithmetic number, because the mean of its divisors is an integer number (10664370900).

Almost surely, 2^83789431681 is an apocalyptic number.

It is an amenable number.

83789431681 is a deficient number, since it is larger than the sum of its proper divisors (1525535519).

83789431681 is a wasteful number, since it uses less digits than its factorization.

83789431681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1756319.

The product of its digits is 6967296, while the sum is 58.

The spelling of 83789431681 in words is "eighty-three billion, seven hundred eighty-nine million, four hundred thirty-one thousand, six hundred eighty-one".