42561340605111 has 16 divisors (see below), whose sum is σ = 58727955087360. Its totient is φ = 27385231853280.

The previous prime is 42561340605109. The next prime is 42561340605209. The reversal of 42561340605111 is 11150604316524.

It is not a de Polignac number, because 42561340605111 - 2¹ = 42561340605109 is a prime.

It is a super-2 number, since 2×42561340605111² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42561340605111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42561340601111) 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, 94180375 + ... + 94631208.

It is an arithmetic number, because the mean of its divisors is an integer number (3670497192960).

Almost surely, 2^{42561340605111} is an apocalyptic number.

42561340605111 is a deficient number, since it is larger than the sum of its proper divisors (16166614482249).

42561340605111 is a wasteful number, since it uses less digits than its factorization.

42561340605111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188814206.

The product of its (nonzero) digits is 86400, while the sum is 39.

The spelling of 42561340605111 in words is "forty-two trillion, five hundred sixty-one billion, three hundred forty million, six hundred five thousand, one hundred eleven".