83509343413 has 4 divisors (see below), whose sum is σ = 83560358700. Its totient is φ = 83458328128.

The previous prime is 83509343383. The next prime is 83509343447. The reversal of 83509343413 is 31434390538.

It is a happy number.

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 44555610724 + 38953732689 = 211082^2 + 197367^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83509343413 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 83509343413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83509343453) 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, 25505188 + ... + 25508461.

It is an arithmetic number, because the mean of its divisors is an integer number (20890089675).

Almost surely, 2^83509343413 is an apocalyptic number.

It is an amenable number.

83509343413 is a deficient number, since it is larger than the sum of its proper divisors (51015287).

83509343413 is a wasteful number, since it uses less digits than its factorization.

83509343413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51015286.

The product of its (nonzero) digits is 466560, while the sum is 43.

The spelling of 83509343413 in words is "eighty-three billion, five hundred nine million, three hundred forty-three thousand, four hundred thirteen".