2878732642878 has 32 divisors (see below), whose sum is σ = 6733877529600. Its totient is φ = 909073465848.

The previous prime is 2878732642861. The next prime is 2878732642943. The reversal of 2878732642878 is 8782462378782.

2878732642878 is a `hidden beast` number, since 2 + 8 + 7 + 87 + 3 + 264 + 287 + 8 = 666.

2878732642878 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 polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1402890126 + ... + 1402892177.

It is an arithmetic number, because the mean of its divisors is an integer number (210433672800).

Almost surely, 2^{2878732642878} is an apocalyptic number.

2878732642878 is an abundant number, since it is smaller than the sum of its proper divisors (3855144886722).

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

2878732642878 is a wasteful number, since it uses less digits than its factorization.

2878732642878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2805782333 (or 2805782327 counting only the distinct ones).

The product of its digits is 809238528, while the sum is 72.

The spelling of 2878732642878 in words is "two trillion, eight hundred seventy-eight billion, seven hundred thirty-two million, six hundred forty-two thousand, eight hundred seventy-eight".