6551817412 has 24 divisors (see below), whose sum is σ = 13145517056. Its totient is φ = 2798947008.

The previous prime is 6551817409. The next prime is 6551817451. The reversal of 6551817412 is 2147181556.

It is a super-2 number, since 2×6551817412² = 85852622800372755488, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 365028 + ... + 382555.

Almost surely, 2^6551817412 is an apocalyptic number.

It is an amenable number.

6551817412 is an abundant number, since it is smaller than the sum of its proper divisors (6593699644).

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

6551817412 is a wasteful number, since it uses less digits than its factorization.

6551817412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747907 (or 747905 counting only the distinct ones).

The product of its digits is 67200, while the sum is 40.

The square root of 6551817412 is about 80943.2975112826. The cubic root of 6551817412 is about 1871.2016652300.

Adding to 6551817412 its reverse (2147181556), we get a palindrome (8698998968).

The spelling of 6551817412 in words is "six billion, five hundred fifty-one million, eight hundred seventeen thousand, four hundred twelve".