56616061055077 has 2 divisors, whose sum is σ = 56616061055078. Its totient is φ = 56616061055076.

The previous prime is 56616061055069. The next prime is 56616061055107. The reversal of 56616061055077 is 77055016061665.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42893081616961 + 13722979438116 = 6549281^2 + 3704454^2 .

It is a cyclic number.

It is not a de Polignac number, because 56616061055077 - 2³ = 56616061055069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56616061055027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28308030527538 + 28308030527539.

It is an arithmetic number, because the mean of its divisors is an integer number (28308030527539).

Almost surely, 2^{56616061055077} is an apocalyptic number.

It is an amenable number.

56616061055077 is a deficient number, since it is larger than the sum of its proper divisors (1).

56616061055077 is an equidigital number, since it uses as much as digits as its factorization.

56616061055077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7938000, while the sum is 55.

The spelling of 56616061055077 in words is "fifty-six trillion, six hundred sixteen billion, sixty-one million, fifty-five thousand, seventy-seven".