6611621312 has 28 divisors (see below), whose sum is σ = 13128879000. Its totient is φ = 3303557376.

The previous prime is 6611621309. The next prime is 6611621389. The reversal of 6611621312 is 2131261166.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61478 + ... + 130394.

Almost surely, 2^6611621312 is an apocalyptic number.

It is an amenable number.

6611621312 is a deficient number, since it is larger than the sum of its proper divisors (6517257688).

6611621312 is a wasteful number, since it uses less digits than its factorization.

6611621312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70428 (or 70418 counting only the distinct ones).

The product of its digits is 2592, while the sum is 29.

The square root of 6611621312 is about 81311.8768200562. The cubic root of 6611621312 is about 1876.8777691528.

Adding to 6611621312 its reverse (2131261166), we get a palindrome (8742882478).

The spelling of 6611621312 in words is "six billion, six hundred eleven million, six hundred twenty-one thousand, three hundred twelve".