42684549664 has 24 divisors (see below), whose sum is σ = 84046648140. Its totient is φ = 21339369216.

The previous prime is 42684549623. The next prime is 42684549683. The reversal of 42684549664 is 46694548624.

It can be written as a sum of positive squares in 2 ways, for example, as 31722459664 + 10962090000 = 178108^2 + 104700^2 .

It is a super-3 number, since 3×42684549664³ (a number of 33 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42684549599 and 42684549608.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158442 + ... + 332374.

Almost surely, 2^42684549664 is an apocalyptic number.

It is an amenable number.

42684549664 is a deficient number, since it is larger than the sum of its proper divisors (41362098476).

42684549664 is a wasteful number, since it uses less digits than its factorization.

42684549664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181612 (or 181604 counting only the distinct ones).

The product of its digits is 39813120, while the sum is 58.

The spelling of 42684549664 in words is "forty-two billion, six hundred eighty-four million, five hundred forty-nine thousand, six hundred sixty-four".