4067603861021 has 4 divisors (see below), whose sum is σ = 4082288351772. Its totient is φ = 4052919370272.

The previous prime is 4067603861017. The next prime is 4067603861039. The reversal of 4067603861021 is 1201683067604.

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 2513128531225 + 1554475329796 = 1585285^2 + 1246786^2 .

It is a cyclic number.

It is not a de Polignac number, because 4067603861021 - 2² = 4067603861017 is a prime.

It is a super-3 number, since 3×4067603861021³ (a number of 39 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4067603861071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7342244960 + ... + 7342245513.

It is an arithmetic number, because the mean of its divisors is an integer number (1020572087943).

Almost surely, 2^{4067603861021} is an apocalyptic number.

It is an amenable number.

4067603861021 is a deficient number, since it is larger than the sum of its proper divisors (14684490751).

4067603861021 is a wasteful number, since it uses less digits than its factorization.

4067603861021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14684490750.

The product of its (nonzero) digits is 290304, while the sum is 44.

The spelling of 4067603861021 in words is "four trillion, sixty-seven billion, six hundred three million, eight hundred sixty-one thousand, twenty-one".