478142618387 has 4 divisors (see below), whose sum is σ = 546448706736. Its totient is φ = 409836530040.

The previous prime is 478142618383. The next prime is 478142618453. The reversal of 478142618387 is 783816241874.

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

It is not a de Polignac number, because 478142618387 - 2² = 478142618383 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (478142618383) 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, 34153044164 + ... + 34153044177.

It is an arithmetic number, because the mean of its divisors is an integer number (136612176684).

Almost surely, 2^478142618387 is an apocalyptic number.

478142618387 is a deficient number, since it is larger than the sum of its proper divisors (68306088349).

478142618387 is an equidigital number, since it uses as much as digits as its factorization.

478142618387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68306088348.

The product of its digits is 14450688, while the sum is 59.

The spelling of 478142618387 in words is "four hundred seventy-eight billion, one hundred forty-two million, six hundred eighteen thousand, three hundred eighty-seven".