54556777779 has 16 divisors (see below), whose sum is σ = 83692089600. Its totient is φ = 30966069600.

The previous prime is 54556777777. The next prime is 54556777789. The reversal of 54556777779 is 97777765545.

It is not a de Polignac number, because 54556777779 - 2¹ = 54556777777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54556777777) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8714797 + ... + 8721054.

It is an arithmetic number, because the mean of its divisors is an integer number (5230755600).

Almost surely, 2^54556777779 is an apocalyptic number.

54556777779 is a deficient number, since it is larger than the sum of its proper divisors (29135311821).

54556777779 is a wasteful number, since it uses less digits than its factorization.

54556777779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17436010.

The product of its digits is 453789000, while the sum is 69.

The spelling of 54556777779 in words is "fifty-four billion, five hundred fifty-six million, seven hundred seventy-seven thousand, seven hundred seventy-nine".