42878785052071 has 16 divisors (see below), whose sum is σ = 44657613619200. Its totient is φ = 41120052876000.

The previous prime is 42878785052063. The next prime is 42878785052161. The reversal of 42878785052071 is 17025058787824.

It is a cyclic number.

It is not a de Polignac number, because 42878785052071 - 2³ = 42878785052063 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42878785051994 and 42878785052012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42878785052021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29554840 + ... + 30971698.

It is an arithmetic number, because the mean of its divisors is an integer number (2791100851200).

Almost surely, 2^{42878785052071} is an apocalyptic number.

42878785052071 is a deficient number, since it is larger than the sum of its proper divisors (1778828567129).

42878785052071 is a wasteful number, since it uses less digits than its factorization.

42878785052071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1423950.

The product of its (nonzero) digits is 70246400, while the sum is 64.

The spelling of 42878785052071 in words is "forty-two trillion, eight hundred seventy-eight billion, seven hundred eighty-five million, fifty-two thousand, seventy-one".