42559064681 has 16 divisors (see below), whose sum is σ = 51532205184. Its totient is φ = 34311922944.

The previous prime is 42559064677. The next prime is 42559064693. The reversal of 42559064681 is 18646095524.

It is a cyclic number.

It is not a de Polignac number, because 42559064681 - 2² = 42559064677 is a prime.

It is a super-2 number, since 2×42559064681² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42559064671) 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, 81086 + ... + 302808.

It is an arithmetic number, because the mean of its divisors is an integer number (3220762824).

Almost surely, 2^42559064681 is an apocalyptic number.

It is an amenable number.

42559064681 is a deficient number, since it is larger than the sum of its proper divisors (8973140503).

42559064681 is a wasteful number, since it uses less digits than its factorization.

42559064681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223360.

The product of its (nonzero) digits is 2073600, while the sum is 50.

The spelling of 42559064681 in words is "forty-two billion, five hundred fifty-nine million, sixty-four thousand, six hundred eighty-one".