55611116779 has 4 divisors (see below), whose sum is σ = 55807622776. Its totient is φ = 55414610784.

The previous prime is 55611116767. The next prime is 55611116861. The reversal of 55611116779 is 97761111655.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97761111655 = 5 ⋅19552222331.

It is a cyclic number.

It is not a de Polignac number, because 55611116779 - 2²³ = 55602728171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55611116279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98252574 + ... + 98253139.

It is an arithmetic number, because the mean of its divisors is an integer number (13951905694).

Almost surely, 2^55611116779 is an apocalyptic number.

55611116779 is a deficient number, since it is larger than the sum of its proper divisors (196505997).

55611116779 is a wasteful number, since it uses less digits than its factorization.

55611116779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196505996.

The product of its digits is 396900, while the sum is 49.

The spelling of 55611116779 in words is "fifty-five billion, six hundred eleven million, one hundred sixteen thousand, seven hundred seventy-nine".