42878328881115 has 32 divisors (see below), whose sum is σ = 84437324568576. Its totient is φ = 18093712406400.

The previous prime is 42878328881111. The next prime is 42878328881131. The reversal of 42878328881115 is 51118882387824.

It is not a de Polignac number, because 42878328881115 - 2² = 42878328881111 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42878328881111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15706346211 + ... + 15706348940.

It is an arithmetic number, because the mean of its divisors is an integer number (2638666392768).

Almost surely, 2^{42878328881115} is an apocalyptic number.

42878328881115 is a deficient number, since it is larger than the sum of its proper divisors (41558995687461).

42878328881115 is a wasteful number, since it uses less digits than its factorization.

42878328881115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31412695179.

The product of its digits is 55050240, while the sum is 66.

The spelling of 42878328881115 in words is "forty-two trillion, eight hundred seventy-eight billion, three hundred twenty-eight million, eight hundred eighty-one thousand, one hundred fifteen".