83394363553 has 2 divisors, whose sum is σ = 83394363554. Its totient is φ = 83394363552.

The previous prime is 83394363511. The next prime is 83394363557. The reversal of 83394363553 is 35536349338.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43870140304 + 39524223249 = 209452^2 + 198807^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83394363553 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 83394363553.

It is not a weakly prime, because it can be changed into another prime (83394363557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41697181776 + 41697181777.

It is an arithmetic number, because the mean of its divisors is an integer number (41697181777).

Almost surely, 2^83394363553 is an apocalyptic number.

It is an amenable number.

83394363553 is a deficient number, since it is larger than the sum of its proper divisors (1).

83394363553 is an equidigital number, since it uses as much as digits as its factorization.

83394363553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10497600, while the sum is 52.

The spelling of 83394363553 in words is "eighty-three billion, three hundred ninety-four million, three hundred sixty-three thousand, five hundred fifty-three".