478147673778 has 16 divisors (see below), whose sum is σ = 961823068416. Its totient is φ = 158461271120.

The previous prime is 478147673747. The next prime is 478147673789. The reversal of 478147673778 is 877376741874.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230320578 + ... + 230322653.

It is an arithmetic number, because the mean of its divisors is an integer number (60113941776).

Almost surely, 2^478147673778 is an apocalyptic number.

478147673778 is an abundant number, since it is smaller than the sum of its proper divisors (483675394638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

478147673778 is a wasteful number, since it uses less digits than its factorization.

478147673778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460643409.

The product of its digits is 309786624, while the sum is 69.

The spelling of 478147673778 in words is "four hundred seventy-eight billion, one hundred forty-seven million, six hundred seventy-three thousand, seven hundred seventy-eight".