42687184867 has 4 divisors (see below), whose sum is σ = 42998770296. Its totient is φ = 42375599440.

The previous prime is 42687184831. The next prime is 42687184873. The reversal of 42687184867 is 76848178624.

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 42687184867 - 2¹¹ = 42687182819 is a prime.

It is a super-3 number, since 3×42687184867³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42687184817) 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, 155792509 + ... + 155792782.

It is an arithmetic number, because the mean of its divisors is an integer number (10749692574).

Almost surely, 2^42687184867 is an apocalyptic number.

42687184867 is a deficient number, since it is larger than the sum of its proper divisors (311585429).

42687184867 is a wasteful number, since it uses less digits than its factorization.

42687184867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311585428.

The product of its digits is 28901376, while the sum is 61.

The spelling of 42687184867 in words is "forty-two billion, six hundred eighty-seven million, one hundred eighty-four thousand, eight hundred sixty-seven".