2878780878782 has 16 divisors (see below), whose sum is σ = 4506302453760. Its totient is φ = 1376690743032.

The previous prime is 2878780878731. The next prime is 2878780878797.

2878780878782 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 2878780878697 and 2878780878706.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2124482 + ... + 3204837.

It is an arithmetic number, because the mean of its divisors is an integer number (281643903360).

Almost surely, 2^{2878780878782} is an apocalyptic number.

2878780878782 is a deficient number, since it is larger than the sum of its proper divisors (1627521574978).

2878780878782 is a wasteful number, since it uses less digits than its factorization.

2878780878782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5341087.

The product of its (nonzero) digits is 2517630976, while the sum is 80.

The spelling of 2878780878782 in words is "two trillion, eight hundred seventy-eight billion, seven hundred eighty million, eight hundred seventy-eight thousand, seven hundred eighty-two".