478318396715 has 4 divisors (see below), whose sum is σ = 573982076064. Its totient is φ = 382654717368.

The previous prime is 478318396711. The next prime is 478318396747. The reversal of 478318396715 is 517693813874.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 478318396715 - 2² = 478318396711 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (478318396711) 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, 47831839667 + ... + 47831839676.

It is an arithmetic number, because the mean of its divisors is an integer number (143495519016).

Almost surely, 2^478318396715 is an apocalyptic number.

478318396715 is a deficient number, since it is larger than the sum of its proper divisors (95663679349).

478318396715 is an equidigital number, since it uses as much as digits as its factorization.

478318396715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95663679348.

The product of its digits is 30481920, while the sum is 62.

The spelling of 478318396715 in words is "four hundred seventy-eight billion, three hundred eighteen million, three hundred ninety-six thousand, seven hundred fifteen".