42723283637 has 4 divisors (see below), whose sum is σ = 42877519596. Its totient is φ = 42569047680.

The previous prime is 42723283607. The next prime is 42723283649. The reversal of 42723283637 is 73638232724.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2341979236 + 40381304401 = 48394^2 + 200951^2 .

It is a cyclic number.

It is not a de Polignac number, because 42723283637 - 2¹⁸ = 42723021493 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42723283591 and 42723283600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42723283607) 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, 77117564 + ... + 77118117.

It is an arithmetic number, because the mean of its divisors is an integer number (10719379899).

Almost surely, 2^42723283637 is an apocalyptic number.

It is an amenable number.

42723283637 is a deficient number, since it is larger than the sum of its proper divisors (154235959).

42723283637 is a wasteful number, since it uses less digits than its factorization.

42723283637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154235958.

The product of its digits is 2032128, while the sum is 47.

The spelling of 42723283637 in words is "forty-two billion, seven hundred twenty-three million, two hundred eighty-three thousand, six hundred thirty-seven".