42218433637 has 4 divisors (see below), whose sum is σ = 44440456480. Its totient is φ = 39996410796.

The previous prime is 42218433617. The next prime is 42218433661. The reversal of 42218433637 is 73633481224.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42218433637 - 2¹¹ = 42218431589 is a prime.

It is a super-2 number, since 2×42218433637² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42218433593 and 42218433602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42218433617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1111011393 + ... + 1111011430.

It is an arithmetic number, because the mean of its divisors is an integer number (11110114120).

Almost surely, 2^42218433637 is an apocalyptic number.

It is an amenable number.

42218433637 is a deficient number, since it is larger than the sum of its proper divisors (2222022843).

42218433637 is a wasteful number, since it uses less digits than its factorization.

42218433637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2222022842.

The product of its digits is 580608, while the sum is 43.

The spelling of 42218433637 in words is "forty-two billion, two hundred eighteen million, four hundred thirty-three thousand, six hundred thirty-seven".