83441821237 has 4 divisors (see below), whose sum is σ = 83680909900. Its totient is φ = 83202732576.

The previous prime is 83441821193. The next prime is 83441821247. The reversal of 83441821237 is 73212814438.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 45272775076 + 38169046161 = 212774^2 + 195369^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83441821237 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83441821193 and 83441821202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83441821247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119543808 + ... + 119544505.

It is an arithmetic number, because the mean of its divisors is an integer number (20920227475).

Almost surely, 2^83441821237 is an apocalyptic number.

It is an amenable number.

83441821237 is a deficient number, since it is larger than the sum of its proper divisors (239088663).

83441821237 is a wasteful number, since it uses less digits than its factorization.

83441821237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239088662.

The product of its digits is 258048, while the sum is 43.

The spelling of 83441821237 in words is "eighty-three billion, four hundred forty-one million, eight hundred twenty-one thousand, two hundred thirty-seven".