4278538258578 has 24 divisors (see below), whose sum is σ = 9270984937500. Its totient is φ = 1426053464064.

The previous prime is 4278538258573. The next prime is 4278538258583. The reversal of 4278538258578 is 8758528358724.

4278538258578 is a `hidden beast` number, since 4 + 2 + 7 + 8 + 5 + 38 + 2 + 585 + 7 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (4278538258573) and next prime (4278538258583).

It can be written as a sum of positive squares in 2 ways, for example, as 4153415468049 + 125122790529 = 2037993^2 + 353727^2 .

It is not an unprimeable number, because it can be changed into a prime (4278538258573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10286703 + ... + 10694546.

Almost surely, 2^{4278538258578} is an apocalyptic number.

4278538258578 is an abundant number, since it is smaller than the sum of its proper divisors (4992446678922).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4278538258578 is a wasteful number, since it uses less digits than its factorization.

4278538258578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20992586 (or 20992583 counting only the distinct ones).

The product of its digits is 1204224000, while the sum is 72.

The spelling of 4278538258578 in words is "four trillion, two hundred seventy-eight billion, five hundred thirty-eight million, two hundred fifty-eight thousand, five hundred seventy-eight".