386720220077 has 2 divisors, whose sum is σ = 386720220078. Its totient is φ = 386720220076.

The previous prime is 386720220037. The next prime is 386720220091. The reversal of 386720220077 is 770022027683.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 349388570281 + 37331649796 = 591091^2 + 193214^2 .

It is an emirp because it is prime and its reverse (770022027683) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 386720220077 - 2³⁰ = 385646478253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (386720220037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193360110038 + 193360110039.

It is an arithmetic number, because the mean of its divisors is an integer number (193360110039).

Almost surely, 2^386720220077 is an apocalyptic number.

It is an amenable number.

386720220077 is a deficient number, since it is larger than the sum of its proper divisors (1).

386720220077 is an equidigital number, since it uses as much as digits as its factorization.

386720220077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 395136, while the sum is 44.

The spelling of 386720220077 in words is "three hundred eighty-six billion, seven hundred twenty million, two hundred twenty thousand, seventy-seven".