42589851638 has 8 divisors (see below), whose sum is σ = 65370470088. Its totient is φ = 20799694944.

The previous prime is 42589851637. The next prime is 42589851643. The reversal of 42589851638 is 83615898524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42589851637) 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, 247615331 + ... + 247615502.

It is an arithmetic number, because the mean of its divisors is an integer number (8171308761).

Almost surely, 2^42589851638 is an apocalyptic number.

42589851638 is a deficient number, since it is larger than the sum of its proper divisors (22780618450).

42589851638 is a wasteful number, since it uses less digits than its factorization.

42589851638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495230878.

The product of its digits is 16588800, while the sum is 59.

The spelling of 42589851638 in words is "forty-two billion, five hundred eighty-nine million, eight hundred fifty-one thousand, six hundred thirty-eight".