83611057973 has 2 divisors, whose sum is σ = 83611057974. Its totient is φ = 83611057972.

The previous prime is 83611057927. The next prime is 83611058033. The reversal of 83611057973 is 37975011638.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67921741924 + 15689316049 = 260618^2 + 125257^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83611057973 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83611057273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41805528986 + 41805528987.

It is an arithmetic number, because the mean of its divisors is an integer number (41805528987).

Almost surely, 2^83611057973 is an apocalyptic number.

It is an amenable number.

83611057973 is a deficient number, since it is larger than the sum of its proper divisors (1).

83611057973 is an equidigital number, since it uses as much as digits as its factorization.

83611057973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 952560, while the sum is 50.

The spelling of 83611057973 in words is "eighty-three billion, six hundred eleven million, fifty-seven thousand, nine hundred seventy-three".