4278048927920 has 40 divisors (see below), whose sum is σ = 10267317432960. Its totient is φ = 1656018938880.

The previous prime is 4278048927881. The next prime is 4278048927931. The reversal of 4278048927920 is 297298408724.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×4278048927920² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 862507385 + ... + 862512344.

It is an arithmetic number, because the mean of its divisors is an integer number (256682935824).

Almost surely, 2^{4278048927920} is an apocalyptic number.

4278048927920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4278048927920 is an abundant number, since it is smaller than the sum of its proper divisors (5989268505040).

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

4278048927920 is a wasteful number, since it uses less digits than its factorization.

4278048927920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1725019773 (or 1725019767 counting only the distinct ones).

The product of its (nonzero) digits is 32514048, while the sum is 62.

The spelling of 4278048927920 in words is "four trillion, two hundred seventy-eight billion, forty-eight million, nine hundred twenty-seven thousand, nine hundred twenty".