555556666679 has 8 divisors (see below), whose sum is σ = 645330461088. Its totient is φ = 468385011360.

The previous prime is 555556666661. The next prime is 555556666733. The reversal of 555556666679 is 976666655555.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-555556666679 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (555556665679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 650534312 + ... + 650535165.

It is an arithmetic number, because the mean of its divisors is an integer number (80666307636).

Almost surely, 2^555556666679 is an apocalyptic number.

555556666679 is a deficient number, since it is larger than the sum of its proper divisors (89773794409).

555556666679 is a wasteful number, since it uses less digits than its factorization.

555556666679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1301069545.

The product of its digits is 1530900000, while the sum is 71.

The spelling of 555556666679 in words is "five hundred fifty-five billion, five hundred fifty-six million, six hundred sixty-six thousand, six hundred seventy-nine".