6556773077 has 2 divisors, whose sum is σ = 6556773078. Its totient is φ = 6556773076.

The previous prime is 6556773053. The next prime is 6556773089. The reversal of 6556773077 is 7703776556.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4734678481 + 1822094596 = 68809^2 + 42686^2 .

It is a cyclic number.

It is not a de Polignac number, because 6556773077 - 2⁸ = 6556772821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6556779077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3278386538 + 3278386539.

It is an arithmetic number, because the mean of its divisors is an integer number (3278386539).

Almost surely, 2^6556773077 is an apocalyptic number.

It is an amenable number.

6556773077 is a deficient number, since it is larger than the sum of its proper divisors (1).

6556773077 is an equidigital number, since it uses as much as digits as its factorization.

6556773077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6482700, while the sum is 53.

The square root of 6556773077 is about 80973.9036789014. The cubic root of 6556773077 is about 1871.6733262983.

The spelling of 6556773077 in words is "six billion, five hundred fifty-six million, seven hundred seventy-three thousand, seventy-seven".