67261385104 has 45 divisors (see below), whose sum is σ = 136279667083. Its totient is φ = 32157077216.

The previous prime is 67261385099. The next prime is 67261385111. The reversal of 67261385104 is 40158316276.

The square root of 67261385104 is 259348.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×67261385104² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 23858607 + ... + 23861425.

Almost surely, 2^67261385104 is an apocalyptic number.

67261385104 is the 259348-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67261385104

67261385104 is an abundant number, since it is smaller than the sum of its proper divisors (69018281979).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67261385104 is an frugal number, since it uses more digits than its factorization.

67261385104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5692 (or 2844 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 67261385104 in words is "sixty-seven billion, two hundred sixty-one million, three hundred eighty-five thousand, one hundred four".