83421667589 has 8 divisors (see below), whose sum is σ = 95123349720. Its totient is φ = 72474932736.

The previous prime is 83421667573. The next prime is 83421667597. The reversal of 83421667589 is 98576612438.

It can be written as a sum of positive squares in 4 ways, for example, as 15670783489 + 67750884100 = 125183^2 + 260290^2 .

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 83421667589 - 2⁴ = 83421667573 is a prime.

It is a super-2 number, since 2×83421667589² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83421667519) 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, 188736584 + ... + 188737025.

It is an arithmetic number, because the mean of its divisors is an integer number (11890418715).

Almost surely, 2^83421667589 is an apocalyptic number.

It is an amenable number.

83421667589 is a deficient number, since it is larger than the sum of its proper divisors (11701682131).

83421667589 is a wasteful number, since it uses less digits than its factorization.

83421667589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377473639.

The product of its digits is 17418240, while the sum is 59.

The spelling of 83421667589 in words is "eighty-three billion, four hundred twenty-one million, six hundred sixty-seven thousand, five hundred eighty-nine".