42685540066 has 8 divisors (see below), whose sum is σ = 68953564764. Its totient is φ = 19701018480.

The previous prime is 42685540063. The next prime is 42685540069. The reversal of 42685540066 is 66004558624.

It is an interprime number because it is at equal distance from previous prime (42685540063) and next prime (42685540069).

It can be written as a sum of positive squares in 2 ways, for example, as 42218331841 + 467208225 = 205471^2 + 21615^2 .

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

It is a super-5 number, since 5×42685540066⁵ (a number of 54 digits) contains 55555 as substring. Note that it is a super-d number also for d = 3.

It is a junction number, because it is equal to n+sod(n) for n = 42685539998 and 42685540025.

It is not an unprimeable number, because it can be changed into a prime (42685540063) 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, 820875745 + ... + 820875796.

Almost surely, 2^42685540066 is an apocalyptic number.

42685540066 is a deficient number, since it is larger than the sum of its proper divisors (26268024698).

42685540066 is a wasteful number, since it uses less digits than its factorization.

42685540066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1641751556.

The product of its (nonzero) digits is 1382400, while the sum is 46.

The spelling of 42685540066 in words is "forty-two billion, six hundred eighty-five million, five hundred forty thousand, sixty-six".