44278765440 has 256 divisors, whose sum is σ = 173709688320. Its totient is φ = 9342296064.

The previous prime is 44278765423. The next prime is 44278765451. The reversal of 44278765440 is 4456787244.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48007 + ... + 301433.

It is an arithmetic number, because the mean of its divisors is an integer number (678553470).

Almost surely, 2^44278765440 is an apocalyptic number.

44278765440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 44278765440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86854844160).

44278765440 is an abundant number, since it is smaller than the sum of its proper divisors (129430922880).

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

44278765440 is a wasteful number, since it uses less digits than its factorization.

44278765440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253469 (or 253457 counting only the distinct ones).

The product of its (nonzero) digits is 6021120, while the sum is 51.

The spelling of 44278765440 in words is "forty-four billion, two hundred seventy-eight million, seven hundred sixty-five thousand, four hundred forty".