478661491204 has 18 divisors (see below), whose sum is σ = 907049365530. Its totient is φ = 220920687936.

The previous prime is 478661491177. The next prime is 478661491247. The reversal of 478661491204 is 402194166874.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 16628618304 + 462032872900 = 128952^2 + 679730^2 .

It is a Harshad number since it is a multiple of its sum of digits (52).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 354038889 + ... + 354040240.

Almost surely, 2^478661491204 is an apocalyptic number.

It is an amenable number.

478661491204 is a deficient number, since it is larger than the sum of its proper divisors (428387874326).

478661491204 is a wasteful number, since it uses less digits than its factorization.

478661491204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708079159 (or 708079144 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 52.

The spelling of 478661491204 in words is "four hundred seventy-eight billion, six hundred sixty-one million, four hundred ninety-one thousand, two hundred four".