6551491344 has 20 divisors (see below), whose sum is σ = 16924686096. Its totient is φ = 2183830432.

The previous prime is 6551491319. The next prime is 6551491357. The reversal of 6551491344 is 4431941556.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 6551491296 and 6551491305.

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 3 ways as a sum of consecutive naturals, for example, 68244654 + ... + 68244749.

Almost surely, 2^6551491344 is an apocalyptic number.

It is an amenable number.

6551491344 is an abundant number, since it is smaller than the sum of its proper divisors (10373194752).

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

6551491344 is a wasteful number, since it uses less digits than its factorization.

6551491344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136489414 (or 136489408 counting only the distinct ones).

The product of its digits is 259200, while the sum is 42.

The square root of 6551491344 is about 80941.2833108050. The cubic root of 6551491344 is about 1871.1706229981.

The spelling of 6551491344 in words is "six billion, five hundred fifty-one million, four hundred ninety-one thousand, three hundred forty-four".