83328890641 has 2 divisors, whose sum is σ = 83328890642. Its totient is φ = 83328890640.

The previous prime is 83328890639. The next prime is 83328890651. The reversal of 83328890641 is 14609882338.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55379738241 + 27949152400 = 235329^2 + 167180^2 .

It is a cyclic number.

It is not a de Polignac number, because 83328890641 - 2¹ = 83328890639 is a prime.

Together with 83328890639, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (83328890651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41664445320 + 41664445321.

It is an arithmetic number, because the mean of its divisors is an integer number (41664445321).

Almost surely, 2^83328890641 is an apocalyptic number.

It is an amenable number.

83328890641 is a deficient number, since it is larger than the sum of its proper divisors (1).

83328890641 is an equidigital number, since it uses as much as digits as its factorization.

83328890641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1990656, while the sum is 52.

The spelling of 83328890641 in words is "eighty-three billion, three hundred twenty-eight million, eight hundred ninety thousand, six hundred forty-one".