42878516331418 has 16 divisors (see below), whose sum is σ = 69762177218664. Its totient is φ = 19685975933440.

The previous prime is 42878516331359. The next prime is 42878516331419. The reversal of 42878516331418 is 81413361587824.

It can be written as a sum of positive squares in 4 ways, for example, as 34742689969849 + 8135826361569 = 5894293^2 + 2852337^2 .

It is a super-3 number, since 3×42878516331418³ (a number of 42 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (42878516331419) 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, 15379667305 + ... + 15379670092.

Almost surely, 2^{42878516331418} is an apocalyptic number.

42878516331418 is a deficient number, since it is larger than the sum of its proper divisors (26883660887246).

42878516331418 is a wasteful number, since it uses less digits than its factorization.

42878516331418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30759337457.

The product of its digits is 30965760, while the sum is 61.

The spelling of 42878516331418 in words is "forty-two trillion, eight hundred seventy-eight billion, five hundred sixteen million, three hundred thirty-one thousand, four hundred eighteen".