478500434787 has 4 divisors (see below), whose sum is σ = 638000579720. Its totient is φ = 319000289856.

The previous prime is 478500434779. The next prime is 478500434849. The reversal of 478500434787 is 787434005874.

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

It is not a de Polignac number, because 478500434787 - 2³ = 478500434779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (478500434287) 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, 79750072462 + ... + 79750072467.

It is an arithmetic number, because the mean of its divisors is an integer number (159500144930).

Almost surely, 2^478500434787 is an apocalyptic number.

478500434787 is a deficient number, since it is larger than the sum of its proper divisors (159500144933).

478500434787 is a wasteful number, since it uses less digits than its factorization.

478500434787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159500144932.

The product of its (nonzero) digits is 21073920, while the sum is 57.

The spelling of 478500434787 in words is "four hundred seventy-eight billion, five hundred million, four hundred thirty-four thousand, seven hundred eighty-seven".