42881805686171 has 4 divisors (see below), whose sum is σ = 42883012741872. Its totient is φ = 42880598630472.

The previous prime is 42881805686147. The next prime is 42881805686191. The reversal of 42881805686171 is 17168650818824.

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

It is a cyclic number.

It is not a de Polignac number, because 42881805686171 - 2⁴² = 38483759175067 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42881805686098 and 42881805686107.

It is not an unprimeable number, because it can be changed into a prime (42881805686191) 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, 603474560 + ... + 603545613.

It is an arithmetic number, because the mean of its divisors is an integer number (10720753185468).

Almost surely, 2^{42881805686171} is an apocalyptic number.

42881805686171 is a deficient number, since it is larger than the sum of its proper divisors (1207055701).

42881805686171 is a wasteful number, since it uses less digits than its factorization.

42881805686171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1207055700.

The product of its (nonzero) digits is 41287680, while the sum is 65.

The spelling of 42881805686171 in words is "forty-two trillion, eight hundred eighty-one billion, eight hundred five million, six hundred eighty-six thousand, one hundred seventy-one".