42571087689 has 16 divisors (see below), whose sum is σ = 63235569600. Its totient is φ = 25294226496.

The previous prime is 42571087687. The next prime is 42571087709. The reversal of 42571087689 is 98678017524.

It is not a de Polignac number, because 42571087689 - 2¹ = 42571087687 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42571087687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18818979 + ... + 18821240.

It is an arithmetic number, because the mean of its divisors is an integer number (3952223100).

Almost surely, 2^42571087689 is an apocalyptic number.

It is an amenable number.

42571087689 is a deficient number, since it is larger than the sum of its proper divisors (20664481911).

42571087689 is a wasteful number, since it uses less digits than its factorization.

42571087689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37640264.

The product of its (nonzero) digits is 6773760, while the sum is 57.

The spelling of 42571087689 in words is "forty-two billion, five hundred seventy-one million, eighty-seven thousand, six hundred eighty-nine".