6636048977 has 2 divisors, whose sum is σ = 6636048978. Its totient is φ = 6636048976.

The previous prime is 6636048919. The next prime is 6636049019. The reversal of 6636048977 is 7798406366.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5776152001 + 859896976 = 76001^2 + 29324^2 .

It is a cyclic number.

It is not a de Polignac number, because 6636048977 - 2²⁴ = 6619271761 is a prime.

It is not a weakly prime, because it can be changed into another prime (6636048677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3318024488 + 3318024489.

It is an arithmetic number, because the mean of its divisors is an integer number (3318024489).

Almost surely, 2^6636048977 is an apocalyptic number.

It is an amenable number.

6636048977 is a deficient number, since it is larger than the sum of its proper divisors (1).

6636048977 is an equidigital number, since it uses as much as digits as its factorization.

6636048977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9144576, while the sum is 56.

The square root of 6636048977 is about 81461.9480309672. The cubic root of 6636048977 is about 1879.1864007258.

The spelling of 6636048977 in words is "six billion, six hundred thirty-six million, forty-eight thousand, nine hundred seventy-seven".