42161643535 has 24 divisors (see below), whose sum is σ = 56151557280. Its totient is φ = 30365269440.

The previous prime is 42161643481. The next prime is 42161643541. The reversal of 42161643535 is 53534616124.

It is not a de Polignac number, because 42161643535 - 2⁹ = 42161643023 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 275980 + ... + 400609.

It is an arithmetic number, because the mean of its divisors is an integer number (2339648220).

Almost surely, 2^42161643535 is an apocalyptic number.

42161643535 is a deficient number, since it is larger than the sum of its proper divisors (13989913745).

42161643535 is a wasteful number, since it uses less digits than its factorization.

42161643535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676719 (or 676708 counting only the distinct ones).

The product of its digits is 259200, while the sum is 40.

The spelling of 42161643535 in words is "forty-two billion, one hundred sixty-one million, six hundred forty-three thousand, five hundred thirty-five".