2878865845440 has 112 divisors (see below), whose sum is σ = 9843506721888. Its totient is φ = 708643897344.

The previous prime is 2878865845409. The next prime is 2878865845483. The reversal of 2878865845440 is 445485688782.

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 15 ways as a sum of consecutive naturals, for example, 115326697 + ... + 115351656.

It is an arithmetic number, because the mean of its divisors is an integer number (87888452874).

Almost surely, 2^{2878865845440} is an apocalyptic number.

2878865845440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2878865845440 is an abundant number, since it is smaller than the sum of its proper divisors (6964640876448).

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

2878865845440 is a wasteful number, since it uses less digits than its factorization.

2878865845440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230678386 (or 230678376 counting only the distinct ones).

The product of its (nonzero) digits is 550502400, while the sum is 69.

The spelling of 2878865845440 in words is "two trillion, eight hundred seventy-eight billion, eight hundred sixty-five million, eight hundred forty-five thousand, four hundred forty".