83208811728641 has 4 divisors (see below), whose sum is σ = 83208851175492. Its totient is φ = 83208772281792.

The previous prime is 83208811728611. The next prime is 83208811728683. The reversal of 83208811728641 is 14682711880238.

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 47504350675600 + 35704461053041 = 6892340^2 + 5975321^2 .

It is a cyclic number.

It is not a de Polignac number, because 83208811728641 - 2⁶ = 83208811728577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83208811728611) 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, 16369196 + ... + 20841501.

It is an arithmetic number, because the mean of its divisors is an integer number (20802212793873).

Almost surely, 2^{83208811728641} is an apocalyptic number.

It is an amenable number.

83208811728641 is a deficient number, since it is larger than the sum of its proper divisors (39446851).

83208811728641 is a wasteful number, since it uses less digits than its factorization.

83208811728641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39446850.

The product of its (nonzero) digits is 8257536, while the sum is 59.

The spelling of 83208811728641 in words is "eighty-three trillion, two hundred eight billion, eight hundred eleven million, seven hundred twenty-eight thousand, six hundred forty-one".