478166661874 has 12 divisors (see below), whose sum is σ = 788382223902. Its totient is φ = 217348482560.

The previous prime is 478166661871. The next prime is 478166661893.

It is a happy number.

478166661874 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 477432631225 + 734030649 = 690965^2 + 27093^2 .

It is not an unprimeable number, because it can be changed into a prime (478166661871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 987947407 + ... + 987947890.

Almost surely, 2^478166661874 is an apocalyptic number.

478166661874 is a deficient number, since it is larger than the sum of its proper divisors (310215562028).

478166661874 is a wasteful number, since it uses less digits than its factorization.

478166661874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1975895321 (or 1975895310 counting only the distinct ones).

The product of its digits is 65028096, while the sum is 64.

The spelling of 478166661874 in words is "four hundred seventy-eight billion, one hundred sixty-six million, six hundred sixty-one thousand, eight hundred seventy-four".