6553436779 has 2 divisors, whose sum is σ = 6553436780. Its totient is φ = 6553436778.

The previous prime is 6553436719. The next prime is 6553436789. The reversal of 6553436779 is 9776343556.

6553436779 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6553436779 - 2³¹ = 4405953131 is a prime.

It is not a weakly prime, because it can be changed into another prime (6553436719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3276718389 + 3276718390.

It is an arithmetic number, because the mean of its divisors is an integer number (3276718390).

Almost surely, 2^6553436779 is an apocalyptic number.

6553436779 is a deficient number, since it is larger than the sum of its proper divisors (1).

6553436779 is an equidigital number, since it uses as much as digits as its factorization.

6553436779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14288400, while the sum is 55.

The square root of 6553436779 is about 80953.2999883266. The cubic root of 6553436779 is about 1871.3558164842.

The spelling of 6553436779 in words is "six billion, five hundred fifty-three million, four hundred thirty-six thousand, seven hundred seventy-nine".