6554159777 has 4 divisors (see below), whose sum is σ = 7149992496. Its totient is φ = 5958327060.

The previous prime is 6554159743. The next prime is 6554159789. The reversal of 6554159777 is 7779514556.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6554159777 - 2¹⁰ = 6554158753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6554159707) 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 in 3 ways as a sum of consecutive naturals, for example, 297916343 + ... + 297916364.

It is an arithmetic number, because the mean of its divisors is an integer number (1787498124).

Almost surely, 2^6554159777 is an apocalyptic number.

It is an amenable number.

6554159777 is a deficient number, since it is larger than the sum of its proper divisors (595832719).

6554159777 is a wasteful number, since it uses less digits than its factorization.

6554159777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595832718.

The product of its digits is 9261000, while the sum is 56.

The square root of 6554159777 is about 80957.7653903565. The cubic root of 6554159777 is about 1871.4246321202.

The spelling of 6554159777 in words is "six billion, five hundred fifty-four million, one hundred fifty-nine thousand, seven hundred seventy-seven".