83699320321 has 4 divisors (see below), whose sum is σ = 83701963332. Its totient is φ = 83696677312.

The previous prime is 83699320291. The next prime is 83699320333. The reversal of 83699320321 is 12302399638.

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 60917644225 + 22781676096 = 246815^2 + 150936^2 .

It is a cyclic number.

It is not a de Polignac number, because 83699320321 - 2³⁵ = 49339581953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83699320351) 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, 1273420 + ... + 1337533.

It is an arithmetic number, because the mean of its divisors is an integer number (20925490833).

Almost surely, 2^83699320321 is an apocalyptic number.

It is an amenable number.

83699320321 is a deficient number, since it is larger than the sum of its proper divisors (2643011).

83699320321 is a wasteful number, since it uses less digits than its factorization.

83699320321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2643010.

The product of its (nonzero) digits is 419904, while the sum is 46.

The spelling of 83699320321 in words is "eighty-three billion, six hundred ninety-nine million, three hundred twenty thousand, three hundred twenty-one".