489578243036679 has 40 divisors (see below), whose sum is σ = 733395119577120. Its totient is φ = 325470720867264.

The previous prime is 489578243036669. The next prime is 489578243036717. The reversal of 489578243036679 is 976630342875984.

489578243036679 is a `hidden beast` number, since 4 + 8 + 9 + 5 + 7 + 8 + 243 + 0 + 366 + 7 + 9 = 666.

It is not a de Polignac number, because 489578243036679 - 2⁵ = 489578243036647 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a junction number, because it is equal to n+sod(n) for n = 489578243036598 and 489578243036607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489578243036669) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2319148257 + ... + 2319359349.

It is an arithmetic number, because the mean of its divisors is an integer number (18334877989428).

Almost surely, 2^{489578243036679} is an apocalyptic number.

489578243036679 is a deficient number, since it is larger than the sum of its proper divisors (243816876540441).

489578243036679 is a wasteful number, since it uses less digits than its factorization.

489578243036679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291221 (or 291212 counting only the distinct ones).

The product of its (nonzero) digits is 13168189440, while the sum is 81.

It can be divided in two parts, 48957824 and 3036679, that added together give a triangular number (51994503 = T₁₀₁₉₇).

The spelling of 489578243036679 in words is "four hundred eighty-nine trillion, five hundred seventy-eight billion, two hundred forty-three million, thirty-six thousand, six hundred seventy-nine".