83609421019 has 4 divisors (see below), whose sum is σ = 83616899344. Its totient is φ = 83601942696.

The previous prime is 83609421001. The next prime is 83609421073. The reversal of 83609421019 is 91012490638.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91012490638 = 2 ⋅45506245319.

It is a cyclic number.

It is not a de Polignac number, because 83609421019 - 2⁵ = 83609420987 is a prime.

It is a super-2 number, since 2×83609421019² (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 (83609421919) 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 3 ways as a sum of consecutive naturals, for example, 3722367 + ... + 3744760.

It is an arithmetic number, because the mean of its divisors is an integer number (20904224836).

Almost surely, 2^83609421019 is an apocalyptic number.

83609421019 is a deficient number, since it is larger than the sum of its proper divisors (7478325).

83609421019 is a wasteful number, since it uses less digits than its factorization.

83609421019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7478324.

The product of its (nonzero) digits is 93312, while the sum is 43.

The spelling of 83609421019 in words is "eighty-three billion, six hundred nine million, four hundred twenty-one thousand, nineteen".