555555672779 has 4 divisors (see below), whose sum is σ = 560472094776. Its totient is φ = 550639250784.

The previous prime is 555555672767. The next prime is 555555672799. The reversal of 555555672779 is 977276555555.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 555555672779 - 2¹² = 555555668683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (555555672709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2458210829 + ... + 2458211054.

It is an arithmetic number, because the mean of its divisors is an integer number (140118023694).

Almost surely, 2^555555672779 is an apocalyptic number.

555555672779 is a deficient number, since it is larger than the sum of its proper divisors (4916421997).

555555672779 is a wasteful number, since it uses less digits than its factorization.

555555672779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4916421996.

The product of its digits is 578812500, while the sum is 68.

The spelling of 555555672779 in words is "five hundred fifty-five billion, five hundred fifty-five million, six hundred seventy-two thousand, seven hundred seventy-nine".