4278728110020 has 192 divisors, whose sum is σ = 15220806107136. Its totient is φ = 873643138560.

The previous prime is 4278728110001. The next prime is 4278728110037. The reversal of 4278728110020 is 200118278724.

It is a super-3 number, since 3×4278728110020³ (a number of 39 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12470254 + ... + 12808773.

It is an arithmetic number, because the mean of its divisors is an integer number (79275031808).

Almost surely, 2^{4278728110020} is an apocalyptic number.

It is an amenable number.

4278728110020 is an abundant number, since it is smaller than the sum of its proper divisors (10942077997116).

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

4278728110020 is a wasteful number, since it uses less digits than its factorization.

4278728110020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25279090 (or 25279088 counting only the distinct ones).

The product of its (nonzero) digits is 100352, while the sum is 42.

The spelling of 4278728110020 in words is "four trillion, two hundred seventy-eight billion, seven hundred twenty-eight million, one hundred ten thousand, twenty".