42878278781044 has 96 divisors (see below), whose sum is σ = 88480804478976. Its totient is φ = 17800865441280.

The previous prime is 42878278780993. The next prime is 42878278781081. The reversal of 42878278781044 is 44018787287824.

42878278781044 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 245390092 + ... + 245564764.

It is an arithmetic number, because the mean of its divisors is an integer number (921675046656).

Almost surely, 2^{42878278781044} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42878278781044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44240402239488).

42878278781044 is an abundant number, since it is smaller than the sum of its proper divisors (45602525697932).

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

42878278781044 is a wasteful number, since it uses less digits than its factorization.

42878278781044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176645 (or 176643 counting only the distinct ones).

The product of its (nonzero) digits is 359661568, while the sum is 70.

The spelling of 42878278781044 in words is "forty-two trillion, eight hundred seventy-eight billion, two hundred seventy-eight million, seven hundred eighty-one thousand, forty-four".