42267785687 has 4 divisors (see below), whose sum is σ = 42303576696. Its totient is φ = 42231994680.

The previous prime is 42267785669. The next prime is 42267785689. The reversal of 42267785687 is 78658776224.

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 42267785687 - 2⁸ = 42267785431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42267785689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17893733 + ... + 17896094.

It is an arithmetic number, because the mean of its divisors is an integer number (10575894174).

Almost surely, 2^42267785687 is an apocalyptic number.

42267785687 is a deficient number, since it is larger than the sum of its proper divisors (35791009).

42267785687 is a wasteful number, since it uses less digits than its factorization.

42267785687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35791008.

The product of its digits is 63221760, while the sum is 62.

The spelling of 42267785687 in words is "forty-two billion, two hundred sixty-seven million, seven hundred eighty-five thousand, six hundred eighty-seven".