2878128032815 has 16 divisors (see below), whose sum is σ = 4083255535680. Its totient is φ = 1905519248640.

The previous prime is 2878128032803. The next prime is 2878128032827. The reversal of 2878128032815 is 5182308218782.

It is an interprime number because it is at equal distance from previous prime (2878128032803) and next prime (2878128032827).

It is not a de Polignac number, because 2878128032815 - 2⁵ = 2878128032783 is a prime.

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, 1417796046 + ... + 1417798075.

It is an arithmetic number, because the mean of its divisors is an integer number (255203470980).

Almost surely, 2^{2878128032815} is an apocalyptic number.

2878128032815 is a deficient number, since it is larger than the sum of its proper divisors (1205127502865).

2878128032815 is a wasteful number, since it uses less digits than its factorization.

2878128032815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2835594162.

The product of its (nonzero) digits is 3440640, while the sum is 55.

The spelling of 2878128032815 in words is "two trillion, eight hundred seventy-eight billion, one hundred twenty-eight million, thirty-two thousand, eight hundred fifteen".