4278378584420 has 24 divisors (see below), whose sum is σ = 8985589168248. Its totient is φ = 1711162073600.

The previous prime is 4278378584353. The next prime is 4278378584443. The reversal of 4278378584420 is 244858738724.

It can be written as a sum of positive squares in 4 ways, for example, as 1523017619236 + 2755360965184 = 1234106^2 + 1659928^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11649671 + ... + 12011310.

It is an arithmetic number, because the mean of its divisors is an integer number (374399548677).

Almost surely, 2^{4278378584420} is an apocalyptic number.

It is an amenable number.

4278378584420 is an abundant number, since it is smaller than the sum of its proper divisors (4707210583828).

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

4278378584420 is a wasteful number, since it uses less digits than its factorization.

4278378584420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23670031 (or 23670029 counting only the distinct ones).

The product of its (nonzero) digits is 96337920, while the sum is 62.

The spelling of 4278378584420 in words is "four trillion, two hundred seventy-eight billion, three hundred seventy-eight million, five hundred eighty-four thousand, four hundred twenty".