67821380404 has 6 divisors (see below), whose sum is σ = 118687415714. Its totient is φ = 33910690200.

The previous prime is 67821380401. The next prime is 67821380437. The reversal of 67821380404 is 40408312876.

67821380404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 44259744400 + 23561636004 = 210380^2 + 153498^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67821380401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8477672547 + ... + 8477672554.

Almost surely, 2^67821380404 is an apocalyptic number.

It is an amenable number.

67821380404 is a deficient number, since it is larger than the sum of its proper divisors (50866035310).

67821380404 is a wasteful number, since it uses less digits than its factorization.

67821380404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16955345105 (or 16955345103 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 43.

The spelling of 67821380404 in words is "sixty-seven billion, eight hundred twenty-one million, three hundred eighty thousand, four hundred four".