42731528689 has 4 divisors (see below), whose sum is σ = 42735340656. Its totient is φ = 42727716724.

The previous prime is 42731528677. The next prime is 42731528699. The reversal of 42731528689 is 98682513724.

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 42731528689 - 2¹⁹ = 42731004401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42731528659) 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, 1889119 + ... + 1911604.

It is an arithmetic number, because the mean of its divisors is an integer number (10683835164).

Almost surely, 2^42731528689 is an apocalyptic number.

It is an amenable number.

42731528689 is a deficient number, since it is larger than the sum of its proper divisors (3811967).

42731528689 is a wasteful number, since it uses less digits than its factorization.

42731528689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3811966.

The product of its digits is 5806080, while the sum is 55.

The spelling of 42731528689 in words is "forty-two billion, seven hundred thirty-one million, five hundred twenty-eight thousand, six hundred eighty-nine".