655815200077 has 2 divisors, whose sum is σ = 655815200078. Its totient is φ = 655815200076.

The previous prime is 655815200071. The next prime is 655815200149. The reversal of 655815200077 is 770002518556.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 536506441156 + 119308758921 = 732466^2 + 345411^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-655815200077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (655815200071) 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 as a sum of consecutive naturals, namely, 327907600038 + 327907600039.

It is an arithmetic number, because the mean of its divisors is an integer number (327907600039).

Almost surely, 2^655815200077 is an apocalyptic number.

It is an amenable number.

655815200077 is a deficient number, since it is larger than the sum of its proper divisors (1).

655815200077 is an equidigital number, since it uses as much as digits as its factorization.

655815200077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 588000, while the sum is 46.

The spelling of 655815200077 in words is "six hundred fifty-five billion, eight hundred fifteen million, two hundred thousand, seventy-seven".