390688133333 has 2 divisors, whose sum is σ = 390688133334. Its totient is φ = 390688133332.

The previous prime is 390688133321. The next prime is 390688133347. The reversal of 390688133333 is 333331886093.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 390397533124 + 290600209 = 624818^2 + 17047^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-390688133333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (390688133393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195344066666 + 195344066667.

It is an arithmetic number, because the mean of its divisors is an integer number (195344066667).

Almost surely, 2^390688133333 is an apocalyptic number.

It is an amenable number.

390688133333 is a deficient number, since it is larger than the sum of its proper divisors (1).

390688133333 is an equidigital number, since it uses as much as digits as its factorization.

390688133333 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2519424, while the sum is 50.

The spelling of 390688133333 in words is "three hundred ninety billion, six hundred eighty-eight million, one hundred thirty-three thousand, three hundred thirty-three".