6556772953 has 2 divisors, whose sum is σ = 6556772954. Its totient is φ = 6556772952.

The previous prime is 6556772899. The next prime is 6556772969. The reversal of 6556772953 is 3592776556.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6121967049 + 434805904 = 78243^2 + 20852^2 .

It is a cyclic number.

It is not a de Polignac number, because 6556772953 - 2¹⁷ = 6556641881 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6556772894 and 6556772903.

It is not a weakly prime, because it can be changed into another prime (6556772983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3278386476 + 3278386477.

It is an arithmetic number, because the mean of its divisors is an integer number (3278386477).

Almost surely, 2^6556772953 is an apocalyptic number.

It is an amenable number.

6556772953 is a deficient number, since it is larger than the sum of its proper divisors (1).

6556772953 is an equidigital number, since it uses as much as digits as its factorization.

6556772953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11907000, while the sum is 55.

The square root of 6556772953 is about 80973.9029132226. The cubic root of 6556772953 is about 1871.6733144994.

The spelling of 6556772953 in words is "six billion, five hundred fifty-six million, seven hundred seventy-two thousand, nine hundred fifty-three".