478474928986 has 64 divisors (see below), whose sum is σ = 820941308928. Its totient is φ = 207903725568.

The previous prime is 478474928977. The next prime is 478474929001. The reversal of 478474928986 is 689829474874.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2593876 + ... + 2772208.

It is an arithmetic number, because the mean of its divisors is an integer number (12827207952).

Almost surely, 2^478474928986 is an apocalyptic number.

478474928986 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

478474928986 is a deficient number, since it is larger than the sum of its proper divisors (342466379942).

478474928986 is a wasteful number, since it uses less digits than its factorization.

478474928986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178495.

The product of its digits is 1560674304, while the sum is 76.

The spelling of 478474928986 in words is "four hundred seventy-eight billion, four hundred seventy-four million, nine hundred twenty-eight thousand, nine hundred eighty-six".