2878886112891 has 16 divisors (see below), whose sum is σ = 3893593566720. Its totient is φ = 1891751768640.

The previous prime is 2878886112887. The next prime is 2878886112917. The reversal of 2878886112891 is 1982116888782.

It is not a de Polignac number, because 2878886112891 - 2² = 2878886112887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2878886112811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3874615 + ... + 4557456.

It is an arithmetic number, because the mean of its divisors is an integer number (243349597920).

Almost surely, 2^{2878886112891} is an apocalyptic number.

2878886112891 is a deficient number, since it is larger than the sum of its proper divisors (1014707453829).

2878886112891 is a wasteful number, since it uses less digits than its factorization.

2878886112891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8433706.

The product of its digits is 49545216, while the sum is 69.

The spelling of 2878886112891 in words is "two trillion, eight hundred seventy-eight billion, eight hundred eighty-six million, one hundred twelve thousand, eight hundred ninety-one".