55536866977 has 2 divisors, whose sum is σ = 55536866978. Its totient is φ = 55536866976.

The previous prime is 55536866941. The next prime is 55536867007. The reversal of 55536866977 is 77966863555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54782211136 + 754655841 = 234056^2 + 27471^2 .

It is a cyclic number.

It is not a de Polignac number, because 55536866977 - 2¹⁹ = 55536342689 is a prime.

It is not a weakly prime, because it can be changed into another prime (55536869977) 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, 27768433488 + 27768433489.

It is an arithmetic number, because the mean of its divisors is an integer number (27768433489).

Almost surely, 2^55536866977 is an apocalyptic number.

It is an amenable number.

55536866977 is a deficient number, since it is larger than the sum of its proper divisors (1).

55536866977 is an equidigital number, since it uses as much as digits as its factorization.

55536866977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 285768000, while the sum is 67.

The spelling of 55536866977 in words is "fifty-five billion, five hundred thirty-six million, eight hundred sixty-six thousand, nine hundred seventy-seven".