478640728159 has 16 divisors (see below), whose sum is σ = 540943128576. Its totient is φ = 419571280800.

The previous prime is 478640728157. The next prime is 478640728177. The reversal of 478640728159 is 951827046874.

It is a cyclic number.

It is not a de Polignac number, because 478640728159 - 2¹ = 478640728157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 478640728097 and 478640728106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478640728151) 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, 2439187 + ... + 2628100.

It is an arithmetic number, because the mean of its divisors is an integer number (33808945536).

Almost surely, 2^478640728159 is an apocalyptic number.

478640728159 is a deficient number, since it is larger than the sum of its proper divisors (62302400417).

478640728159 is a wasteful number, since it uses less digits than its factorization.

478640728159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5067606.

The product of its (nonzero) digits is 27095040, while the sum is 61.

The spelling of 478640728159 in words is "four hundred seventy-eight billion, six hundred forty million, seven hundred twenty-eight thousand, one hundred fifty-nine".