67229533381 has 4 divisors (see below), whose sum is σ = 67922621452. Its totient is φ = 66536445312.

The previous prime is 67229533379. The next prime is 67229533387. The reversal of 67229533381 is 18333592276.

It is a happy number.

67229533381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 53902908900 + 13326624481 = 232170^2 + 115441^2 .

It is a cyclic number.

It is not a de Polignac number, because 67229533381 - 2¹ = 67229533379 is a prime.

It is a super-2 number, since 2×67229533381² (a number of 22 digits) contains 22 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 (67229533387) 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, 346543890 + ... + 346544083.

It is an arithmetic number, because the mean of its divisors is an integer number (16980655363).

Almost surely, 2^67229533381 is an apocalyptic number.

It is an amenable number.

67229533381 is a deficient number, since it is larger than the sum of its proper divisors (693088071).

67229533381 is an equidigital number, since it uses as much as digits as its factorization.

67229533381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693088070.

The product of its digits is 1632960, while the sum is 49.

The spelling of 67229533381 in words is "sixty-seven billion, two hundred twenty-nine million, five hundred thirty-three thousand, three hundred eighty-one".