2878365678444 has 72 divisors (see below), whose sum is σ = 7547062675152. Its totient is φ = 924304711680.

The previous prime is 2878365678443. The next prime is 2878365678479. The reversal of 2878365678444 is 4448765638782.

2878365678444 is a `hidden beast` number, since 2 + 87 + 8 + 36 + 5 + 6 + 78 + 444 = 666.

It is a super-2 number, since 2×2878365678444² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2878365678443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12622677 + ... + 12848684.

Almost surely, 2^{2878365678444} is an apocalyptic number.

It is an amenable number.

2878365678444 is an abundant number, since it is smaller than the sum of its proper divisors (4668696996708).

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

2878365678444 is a wasteful number, since it uses less digits than its factorization.

2878365678444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25471487 (or 25471482 counting only the distinct ones).

The product of its digits is 1734082560, while the sum is 72.

The spelling of 2878365678444 in words is "two trillion, eight hundred seventy-eight billion, three hundred sixty-five million, six hundred seventy-eight thousand, four hundred forty-four".