478541982881 has 4 divisors (see below), whose sum is σ = 479224639764. Its totient is φ = 477859326000.

The previous prime is 478541982871. The next prime is 478541982977. The reversal of 478541982881 is 188289145874.

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

It can be written as a sum of positive squares in 2 ways, for example, as 363990195856 + 114551787025 = 603316^2 + 338455^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-478541982881 is a prime.

It is a super-2 number, since 2×478541982881² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (478541982871) 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, 341327390 + ... + 341328791.

It is an arithmetic number, because the mean of its divisors is an integer number (119806159941).

Almost surely, 2^478541982881 is an apocalyptic number.

It is an amenable number.

478541982881 is a deficient number, since it is larger than the sum of its proper divisors (682656883).

478541982881 is an equidigital number, since it uses as much as digits as its factorization.

478541982881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682656882.

The product of its digits is 41287680, while the sum is 65.

The spelling of 478541982881 in words is "four hundred seventy-eight billion, five hundred forty-one million, nine hundred eighty-two thousand, eight hundred eighty-one".