42878276871378 has 16 divisors (see below), whose sum is σ = 92353211723136. Its totient is φ = 13193315960400.

The previous prime is 42878276871371. The next prime is 42878276871379. The reversal of 42878276871378 is 87317867287824.

It is a Harshad number since it is a multiple of its sum of digits (78), and also a Moran number because the ratio is a prime number: 549721498351 = 42878276871378 / (4 + 2 + 8 + 7 + 8 + 2 + 7 + 6 + 8 + 7 + 1 + 3 + 7 + 8).

It is not an unprimeable number, because it can be changed into a prime (42878276871371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 274860749098 + ... + 274860749253.

It is an arithmetic number, because the mean of its divisors is an integer number (5772075732696).

Almost surely, 2^{42878276871378} is an apocalyptic number.

42878276871378 is an abundant number, since it is smaller than the sum of its proper divisors (49474934851758).

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

42878276871378 is a wasteful number, since it uses less digits than its factorization.

42878276871378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549721498369.

The product of its digits is 2832334848, while the sum is 78.

The spelling of 42878276871378 in words is "forty-two trillion, eight hundred seventy-eight billion, two hundred seventy-six million, eight hundred seventy-one thousand, three hundred seventy-eight".