42878558835841 has 8 divisors (see below), whose sum is σ = 43758856777320. Its totient is φ = 42000900469632.

The previous prime is 42878558835811. The next prime is 42878558835851. The reversal of 42878558835841 is 14853885587824.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1673714025841 + 41204844810000 = 1293721^2 + 6419100^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42878558835841 - 2⁷ = 42878558835713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42878558835811) 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, 659860996 + ... + 659925973.

It is an arithmetic number, because the mean of its divisors is an integer number (5469857097165).

Almost surely, 2^{42878558835841} is an apocalyptic number.

It is an amenable number.

42878558835841 is a deficient number, since it is larger than the sum of its proper divisors (880297941479).

42878558835841 is a wasteful number, since it uses less digits than its factorization.

42878558835841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1319787635.

The product of its digits is 2752512000, while the sum is 76.

The spelling of 42878558835841 in words is "forty-two trillion, eight hundred seventy-eight billion, five hundred fifty-eight million, eight hundred thirty-five thousand, eight hundred forty-one".