69331629481 has 9 divisors (see below), whose sum is σ = 69768550173. Its totient is φ = 68897432940.

The previous prime is 69331629467. The next prime is 69331629517. The reversal of 69331629481 is 18492613396.

It is a happy number.

The square root of 69331629481 is 263309.

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

It is not a de Polignac number, because 69331629481 - 2⁹ = 69331628969 is a prime.

It is a super-2 number, since 2×69331629481² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69331629421) by changing a digit.

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, 47131576 + ... + 47133046.

Almost surely, 2^69331629481 is an apocalyptic number.

69331629481 is the 263309-th square number.

69331629481 is the 131655-th centered octagonal number.

It is an amenable number.

69331629481 is a deficient number, since it is larger than the sum of its proper divisors (436920692).

69331629481 is an frugal number, since it uses more digits than its factorization.

69331629481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3300 (or 1650 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 52.

The spelling of 69331629481 in words is "sixty-nine billion, three hundred thirty-one million, six hundred twenty-nine thousand, four hundred eighty-one".