42878310606529 has 4 divisors (see below), whose sum is σ = 42878730126276. Its totient is φ = 42877891086784.

The previous prime is 42878310606413. The next prime is 42878310606553. The reversal of 42878310606529 is 92560601387824.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9657519599025 + 33220791007504 = 3107655^2 + 5763748^2 .

It is a cyclic number.

It is not a de Polignac number, because 42878310606529 - 2³³ = 42869720671937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42878310706529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209606524 + ... + 209810989.

It is an arithmetic number, because the mean of its divisors is an integer number (10719682531569).

It is a 1-persistent number, because it is pandigital, but 2⋅42878310606529 = 85756621213058 is not.

Almost surely, 2^{42878310606529} is an apocalyptic number.

It is an amenable number.

42878310606529 is a deficient number, since it is larger than the sum of its proper divisors (419519747).

42878310606529 is a wasteful number, since it uses less digits than its factorization.

42878310606529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419519746.

The product of its (nonzero) digits is 34836480, while the sum is 61.

The spelling of 42878310606529 in words is "forty-two trillion, eight hundred seventy-eight billion, three hundred ten million, six hundred six thousand, five hundred twenty-nine".