6551938842 has 16 divisors (see below), whose sum is σ = 13156087392. Its totient is φ = 2175278000.

The previous prime is 6551938829. The next prime is 6551938843. The reversal of 6551938842 is 2488391556.

It is not an unprimeable number, because it can be changed into a prime (6551938843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2173773 + ... + 2176784.

It is an arithmetic number, because the mean of its divisors is an integer number (822255462).

Almost surely, 2^6551938842 is an apocalyptic number.

6551938842 is an abundant number, since it is smaller than the sum of its proper divisors (6604148550).

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

6551938842 is a wasteful number, since it uses less digits than its factorization.

6551938842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4350813.

The product of its digits is 2073600, while the sum is 51.

The square root of 6551938842 is about 80944.0476007964. The cubic root of 6551938842 is about 1871.2132253107.

The spelling of 6551938842 in words is "six billion, five hundred fifty-one million, nine hundred thirty-eight thousand, eight hundred forty-two".