478655778514 has 4 divisors (see below), whose sum is σ = 717983667774. Its totient is φ = 239327889256.

The previous prime is 478655778509. The next prime is 478655778527. The reversal of 478655778514 is 415877556874.

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

It can be written as a sum of positive squares in only one way, i.e., 387562277025 + 91093501489 = 622545^2 + 301817^2 .

It is a super-2 number, since 2×478655778514² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (67) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 478655778514.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119663944627 + ... + 119663944630.

Almost surely, 2^478655778514 is an apocalyptic number.

478655778514 is a deficient number, since it is larger than the sum of its proper divisors (239327889260).

478655778514 is a wasteful number, since it uses less digits than its factorization.

478655778514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239327889259.

The product of its digits is 263424000, while the sum is 67.

The spelling of 478655778514 in words is "four hundred seventy-eight billion, six hundred fifty-five million, seven hundred seventy-eight thousand, five hundred fourteen".