55616672779 has 8 divisors (see below), whose sum is σ = 58928030928. Its totient is φ = 52309735680.

The previous prime is 55616672767. The next prime is 55616672869. The reversal of 55616672779 is 97727661655.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 55616672779 - 2¹⁵ = 55616640011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55616670779) 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, 1079337 + ... + 1129690.

It is an arithmetic number, because the mean of its divisors is an integer number (7366003866).

Almost surely, 2^55616672779 is an apocalyptic number.

55616672779 is a deficient number, since it is larger than the sum of its proper divisors (3311358149).

55616672779 is a wasteful number, since it uses less digits than its factorization.

55616672779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2210525.

The product of its digits is 33339600, while the sum is 61.

The spelling of 55616672779 in words is "fifty-five billion, six hundred sixteen million, six hundred seventy-two thousand, seven hundred seventy-nine".