83808308957 has 2 divisors, whose sum is σ = 83808308958. Its totient is φ = 83808308956.

The previous prime is 83808308939. The next prime is 83808309083. The reversal of 83808308957 is 75980380838.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55982399236 + 27825909721 = 236606^2 + 166811^2 .

It is a cyclic number.

It is not a de Polignac number, because 83808308957 - 2¹² = 83808304861 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 83808308896 and 83808308905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83808308917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41904154478 + 41904154479.

It is an arithmetic number, because the mean of its divisors is an integer number (41904154479).

Almost surely, 2^83808308957 is an apocalyptic number.

It is an amenable number.

83808308957 is a deficient number, since it is larger than the sum of its proper divisors (1).

83808308957 is an equidigital number, since it uses as much as digits as its factorization.

83808308957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11612160, while the sum is 59.

The spelling of 83808308957 in words is "eighty-three billion, eight hundred eight million, three hundred eight thousand, nine hundred fifty-seven".