83018028649409 has 6 divisors (see below), whose sum is σ = 96571992510594. Its totient is φ = 71158310270880.

The previous prime is 83018028649393. The next prime is 83018028649417. The reversal of 83018028649409 is 90494682081038.

It can be written as a sum of positive squares in only one way, i.e., 63647335173184 + 19370693476225 = 7977928^2 + 4401215^2 .

It is not a de Polignac number, because 83018028649409 - 2⁴ = 83018028649393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83018028669409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 847122741272 + ... + 847122741369.

It is an arithmetic number, because the mean of its divisors is an integer number (16095332085099).

Almost surely, 2^{83018028649409} is an apocalyptic number.

It is an amenable number.

83018028649409 is a deficient number, since it is larger than the sum of its proper divisors (13553963861185).

83018028649409 is a wasteful number, since it uses less digits than its factorization.

83018028649409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1694245482655 (or 1694245482648 counting only the distinct ones).

The product of its (nonzero) digits is 23887872, while the sum is 62.

The spelling of 83018028649409 in words is "eighty-three trillion, eighteen billion, twenty-eight million, six hundred forty-nine thousand, four hundred nine".