4064684404681 has 4 divisors (see below), whose sum is σ = 4064722144132. Its totient is φ = 4064646665232.

The previous prime is 4064684404667. The next prime is 4064684404741. The reversal of 4064684404681 is 1864044864604.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1277985030400 + 2786699374281 = 1130480^2 + 1669341^2 .

It is a cyclic number.

It is not a de Polignac number, because 4064684404681 - 2¹¹ = 4064684402633 is a prime.

It is a super-2 number, since 2×4064684404681² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4064684404621) 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, 18707706 + ... + 18923731.

It is an arithmetic number, because the mean of its divisors is an integer number (1016180536033).

Almost surely, 2^{4064684404681} is an apocalyptic number.

It is an amenable number.

4064684404681 is a deficient number, since it is larger than the sum of its proper divisors (37739451).

4064684404681 is a wasteful number, since it uses less digits than its factorization.

4064684404681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37739450.

The product of its (nonzero) digits is 14155776, while the sum is 55.

The spelling of 4064684404681 in words is "four trillion, sixty-four billion, six hundred eighty-four million, four hundred four thousand, six hundred eighty-one".