83604383857 has 2 divisors, whose sum is σ = 83604383858. Its totient is φ = 83604383856.

The previous prime is 83604383791. The next prime is 83604383867. The reversal of 83604383857 is 75838340638.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60653345841 + 22951038016 = 246279^2 + 151496^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83604383857 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 83604383798 and 83604383807.

It is not a weakly prime, because it can be changed into another prime (83604383867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41802191928 + 41802191929.

It is an arithmetic number, because the mean of its divisors is an integer number (41802191929).

Almost surely, 2^83604383857 is an apocalyptic number.

It is an amenable number.

83604383857 is a deficient number, since it is larger than the sum of its proper divisors (1).

83604383857 is an equidigital number, since it uses as much as digits as its factorization.

83604383857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11612160, while the sum is 55.

The spelling of 83604383857 in words is "eighty-three billion, six hundred four million, three hundred eighty-three thousand, eight hundred fifty-seven".